TY  - BOOK
AU  - GULLAND J. A.
TI  - Manual of methods for fish stock assessment
T2  - Manuals in fisheries science. 4
U1  - "KZ332:(B28), K9.1/UN" 
PY  - 1969///
CY  - Rome
PB  - Food and Agriculture Organization Italy   
KW  - Zoology
ER  -