TY  - BOOK
AU  - Edmondson, W.T. ed
AU  - Winberg, G.G. ed
TI  - A Manual on Methods for the Assessment of Secondary Productivity in Fresh Waters: IBP Handbook No.17
SN  - 0632064307
U1  - 632.2.052.2 
PY  - 1971///,
CY  - London
PB  - International Biological Programme
KW  - A Manual on Methods for the Assessment
KW  - Secondary Productivity in Fresh Waters
ER  -