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  "file": "fbise-federal/class-10/physics-10-en.pdf",
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  "edition": "NBF printing",
  "editionNote": "Federal Board / National Book Foundation; SNC-era. Per-book imprint pages not yet verified",
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  "_license": "CC BY 4.0 — attribute to the Textbook Evidence Project.",
  "_note": "Scores are measured properties of text, not verdicts. Read /method/ before using them.",
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