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Creator
- Ackerknecht, Erwin H. (Erwin Heinz), 1906-1988 1
- Adair, Neal G. 3
- Adams, Beth 1
- Adams, Beverley 1
- Adams, Edith 3
- Adams, John, 1926-1998 1
- Adams, John D. (John Duncan), 1879- 1
- Adams, Peter 1
- Adkins, H. E. (Hector Ernest), 1885-1962 1
- Adler, Michael H.
- Aero Surveys Limited 1
- Affleck, George Allan, 1964- 1