TY  - GEN
AU  - Gulland, J.A
TI  - Fish stock assessment: a manual of basic methods
T2  - FAO/Wiley Series on Food and Agriculture, Vol.1
U1  - 639.4 
PY  - 1983///
CY  - Chichester
PB  - John Wiley
KW  - AGRICULTURE
ER  -