TY  - BOOK
AU  - Jeffries,Michael, -
AU  - -
TI  - Freshwater ecology principles and applications: -
SN  - 1852930217
U1  - 574.52632/J47f 
PY  - 1990///
CY  - New york
PB  - Belhaven Press
KW  - Freshwater ecology
KW  - Man-Influence of nature
N1  - Includes
ER  -