TY  - BOOK
AU  - A.G.Coche 
AU  - H.Van der Wal
TI  - Simple Methods for Aquaculture Water for Freshwater fish Culture
T2  - FAO Training Series 4
SN  - 925101112
U1  - 639.31 
PY  - 1981///
CY  - Rome
PB  - FAO of the United Nations
ER  -