TY  - BOOK
AU  - Edwards,R.W., x
AU  - Garrod,D.J.
TI  - Conservation & productivity of natural waters: x
SN  - x
U1  - 574.52632/EDC 
PY  - 1972///
CY  - Lond.
PB  - Academic Press
KW  - Marine Ecology
KW  - Water Conservation
N1  - x
ER  -