Fresh-water biology Ward, Henry Baldwin, 1865-1945 creator Whipple, George Chandler, 1866-1924 contributor text book New York Wiley 1918 1918 1st ed.
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ENG Freshwater biology QH96 .W3 1918 https://www.biodiversitylibrary.org/bibliography/28152 1415642 18002801 10.5962/bhl.title.28152