Willoughby, L. G.
Freshwater biology / L. G. Willoughby. - New York : Pica Press : distributed by Universe Books, 1977, c1976. - 167 p., [4] leaves of plates : ill. ; 24 cm. - Studies in the biological sciences .
Includes bibliographical references and index.
0876637217
B-13706
76020405
Freshwater biology.
QH96 / .W53 1977
574.5/2632
Freshwater biology / L. G. Willoughby. - New York : Pica Press : distributed by Universe Books, 1977, c1976. - 167 p., [4] leaves of plates : ill. ; 24 cm. - Studies in the biological sciences .
Includes bibliographical references and index.
0876637217
B-13706
76020405
Freshwater biology.
QH96 / .W53 1977
574.5/2632