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by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (St. Petersburg Junior College); George B. Johnson (Washington University)
by L. H. Sobin (Armed Forces Institute of Pathology, Washington, DC); Christian Wittekind (Institut für Pathologie der Universität, Leipzig, Germany)
by Irving, Washington; Browne, George H.
by Washington, Von H.
by Washington, Von H., Sr.
by Jefferson, Thomas; Washington, H. A.