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  1. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 57
    Issue: 220
    Date: 1918
    Page Range: 344--353
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 53
    Issue: 213
    Date: 1914
    Page Range: 118--128
    Publication Info: Philadelphia, American Philosophical Society,
  3. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 60
    Issue: 220
    Date: 1921
    Page Range: 43--61
    Publication Info: Philadelphia, American Philosophical Society,
  4. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 61
    Issue: 220
    Date: 1922
    Page Range: 167--183
    Publication Info: Philadelphia, American Philosophical Society,
  5. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 52
    Issue: 209
    Date: 1913
    Page Range: 276--282
    Publication Info: Philadelphia, American Philosophical Society,
  6. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 54
    Issue: 217
    Date: 1915
    Page Range: 154--164
    Publication Info: Philadelphia, American Philosophical Society,
  7. By: Brush, Charles F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 56
    Issue: 220
    Date: 1917
    Page Range: 353--363
    Publication Info: Philadelphia, American Philosophical Society,