TY  - BOOK
AU  - Edited Richard A Vollenweider.
AU  - Edited Richard A Vollenweider.
TI  - A Manual on methods for measuring primary
SN  - 632-05700-9
U1  - 574.5263 MAN 22
PY  - 1969///
CY  - London.
PB  - International Biological Programme.
KW  -  
KW  - Aquatic environment
ER  -