TY  - BOOK
AU  - Pennak, Robert W.
TI  - Fresh water invertebrates of the United States
SN  - 0471042498
U1  - 592.092973 
PY  - 1978///
CY  - New York
PB  - John Wiley and Sons
KW  - Pure Sciences
KW  - Zoological sciences
KW  - Invertebrates
ER  -