TY  - BOOK
AU  - Gulland,J.A.
TI  - Manual  of methods for fish stock assessment
T2  - FAO mannuals in fisheries sciences;no 4
U1  - 591.61 
PY  - 1969///
CY  - Rome
PB  - Food and Aricultural Organisations of the United Nations 
N1  - Contains : pt.1  Fish pollution  analysis
ER  -