TY  - BOOK
AU  - Greeson, Phillip E.
CN  - QE75
CN  - QE75
CN  - QH90
CY  - [Reston, Va.] :
DA  - 1982.
ID  - 39827
KW  - Aquatic biology.
KW  - Water quality bioassay.
PB  - U.S. Dept. of the Interior, Geological Survey,
PP  - [Reston, Va.] :
PY  - 1982.
T1  - Biota and biological principles of the aquatic environment /
TI  - Biota and biological principles of the aquatic environment /
ER  -