Biodiversity Heritage Library
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By "Ecological Society of America."
Naturalist's guide to the Americas, prepared by the Committee on the Preservation of Natural Conditions of the Ecological Society of America, with assistance from numerous organizations and individuals, assembled and edited by chairman,
By: Ecological Society of America. - Shelford, Victor E.
Publication info: Baltimore,Williams & Wilkins,1926.
Contributed by: Prelinger Library (archive.org)