Aquatic plants of United States
Muenscher, Waler Conrad
Aquatic plants of United States - - Comstock Publishing Co., New York 1944 - 374 - .
Aquatic plants-- Freshwater plants of United States
581.76073 MUE-A
Aquatic plants of United States - - Comstock Publishing Co., New York 1944 - 374 - .
Aquatic plants-- Freshwater plants of United States
581.76073 MUE-A