Pennak, Robert W.
Fresh-water invertebrates of the United States / Textual Documents Robert W Pennak. - New York : Ronald Press, 1953. - ix, 769 p.,
Fresh Water Biology Invertebrates Fresh-Water
574.929 / PEN
Fresh-water invertebrates of the United States / Textual Documents Robert W Pennak. - New York : Ronald Press, 1953. - ix, 769 p.,
Fresh Water Biology Invertebrates Fresh-Water
574.929 / PEN