Subject heading
Focus (optics)
3 books carry this heading. It is a source-library term, kept as recorded; related traditions and headings below are drawn from co-occurrence, not editorial judgment.
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Books
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Era
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Ancient Divination and Experience
Lindsay Driediger-Murphy, Esther Eidinow, Lindsay Gayle Driediger-Murphy
2019
A Categorisation and Examination of Egyptian Ships and Boats from the Rise of the Old to the End of the Middle Kingdoms
Michael Allen Stephens
2012
Witchcraft and Masculinities in Early Modern Europe
Alison Rowlands
2009