Fresh-water invertebrates of the United States
Pennak, Robert W.
Fresh-water invertebrates of the United States protozoa to mollusca Robert W. Pennak. - 3rd ed. - New York Wiley c1989. - xvi, 628 p. ill.
Includes bibliographies and index.
0471631183
buc92000592
Freshwater invertebrates--United States.
QL141 / .P45 1989
592.0973
Fresh-water invertebrates of the United States protozoa to mollusca Robert W. Pennak. - 3rd ed. - New York Wiley c1989. - xvi, 628 p. ill.
Includes bibliographies and index.
0471631183
buc92000592
Freshwater invertebrates--United States.
QL141 / .P45 1989
592.0973