Books by N.Y.) International Botanical Congress (4th 1926 Ithaca
Proceedings of the Internation
Proceedings of the International Congress of Plant Sciences, Ithaca, New York, August 16-23, 1926
Official program of the Intern
Official program of the International Congress of Plant Sciences (Fourth International Botanical Congress), Cornell University, Ithaca, New York, U.S.A. August 16-23, 1926