Fresh-water invertebrates of the United States /
Pennak, Robert W.
Fresh-water invertebrates of the United States / by Robert W. Pennak - 2nd ed. - New York : John Wiley & Sons, 1978 - xv, 803 p. : ill. ; 26 cm.
'A Wiley-Interscience publication.'
Includes bibliographies and index
0471042498
Freshwater invertebrates--United States
Fresh-water invertebrates of the United States / by Robert W. Pennak - 2nd ed. - New York : John Wiley & Sons, 1978 - xv, 803 p. : ill. ; 26 cm.
'A Wiley-Interscience publication.'
Includes bibliographies and index
0471042498
Freshwater invertebrates--United States
