Popham, Edward J. [from old catalog]
Some aspects of life in fresh water. - Cambridge, Harvard University Press, 1961. - 127 p. illus. 20 cm.
61019580
Freshwater biology.
QH96 / .P67 1955
Some aspects of life in fresh water. - Cambridge, Harvard University Press, 1961. - 127 p. illus. 20 cm.
61019580
Freshwater biology.
QH96 / .P67 1955