TY  - BOOK
AU  - Pennak,Robert W.
TI  - Fresh-water invertebrates of the United States: protozoa to mollusca
SN  - 0471631183
AV  - QL141 .P45 1989
U1  - 592.0973 19
PY  - 1989///
CY  - New York
PB  - Wiley
KW  - Freshwater invertebrates
KW  - United States
KW  - Local
N1  - Includes bibliographies and index
ER  -