1 หนังสืออิเล็กทรอนิกส์โดย Harmond Richard Harmond
Cevasco George A. Cevasco & Sterling Keir B. Sterling: Biographical Dictionary of American and Canadian Naturalists and Environmentalists
Casting a wide net, this volume provides personal and professional information on some 445 American and Canadian naturalists and environmentalists, who lived from the late 15th century to the late 20 …
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