The fresh-water algae of the United States.
Smith, Gilbert Morgan, 1885-1959.
The fresh-water algae of the United States. - 2d ed. - New York, McGraw-Hill, 1950. - vii, 719 p. illus. 24 cm. - McGraw-Hill publications in the botanical sciences .
50011324
Freshwater algae--United States.
QK571 / .S6 1950
589.3
The fresh-water algae of the United States. - 2d ed. - New York, McGraw-Hill, 1950. - vii, 719 p. illus. 24 cm. - McGraw-Hill publications in the botanical sciences .
50011324
Freshwater algae--United States.
QK571 / .S6 1950
589.3