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  "document": {
    "abstract": "At the close of World War II, attainable levels of resolution in aerial photography were of the order of 20 lines/mm. This level has been increased to better than 100 lines/mm, providing a ground resolution of 1 ft for an 18-in. focal-length camera operating at an altitude of 40,000 ft. This improvement permits better ground resolution, smaller, lighter cameras and higher operating altitudes. Four factors contributing to this growth are better films, improvements in lenses, more sophisticated camera systems and improvements in methods of analysis.",
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      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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    "authors": [
      "Earle B. Brown"
    ],
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
      },
      "year": "1967",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
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    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "docId": "10.5594-J09185",
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      "confidence": "high",
      "note": "Derived from DOI 10.5594/J09185",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "docLabel": "Journal of the SMPTE ( Volume: 76, Issue: 2, February 1967)",
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      "confidence": "medium",
      "note": "Composed from journal title, volume, issue and date",
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      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "docTitle": "High Resolution Aerial Photography",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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      "confidence": "high",
      "note": "NLM <article> — SMPTE journal paper",
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      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "doi": "10.5594/J09185",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "href": "https://doi.org/10.5594/J09185",
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      "confidence": "high",
      "note": "Constructed from DOI 10.5594/J09185",
      "source": "inferred",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "issn": {
      "print": "0361-4573",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
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    "issn$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "journalAcronym": "MIJR",
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      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08182015 BACKFILE JOURNAL FRESH/smptej_76_2/MIJR15Vol76No2.xml)",
      "source": "parsed",
      "updated": "2026-06-16T16:11:59.617Z",
      "version": "smpte-journal-issue-xml@v1"
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    "number": "2",
    "number$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "pages": "100–104",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
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    "publicationDate": "1967-02-01",
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      "confidence": "high",
      "note": "Day absent in NLM source — padded to 01",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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      "confidence": "high",
      "note": "Normalised to registry \"SMPTE\" convention from NLM publisher-name (The Society of Motion Picture and Television Engineers)",
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      "version": "smpte-journal-article-nlm@v1"
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      "city": "White Plains, NY",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
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      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08182015 BACKFILE JOURNAL FRESH/smptej_76_2/MIJR15Vol76No2.xml)",
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        "updated": "2026-06-16T16:11:59.617Z",
        "version": "smpte-journal-issue-xml@v1"
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
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        "confidence": "medium",
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        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
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    "volume": "76",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J09185.xml)",
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