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Okie, A. Howard (Abraham Howard)
Olson, William Cannicott.
Omohundro, Malvern Hill, b. 1866
Omohundro, Malvern Hill, b. 1866.
Oosting, Henry J. (Henry John), 1903-1968
Oosting, Henry J. (Henry John), 1903-1968.
Orfila, Matthieu Joseph Bonaventure, 1787-1853
Organization for Tropical Studies
Organization for Tropical Studies.
Osborn, Robert T., 1926-.
Oscar Micheaux Society.
Osler, Edward Revere, 1895-1917
Osler, William, Sir, 1849-1919
OutRight (Durham, N.C.)
Owen, Richard, 1804-1892