TY  - BOOK
AU  - Gulland,J.A., x
AU  - x
TI  - Fish stock assessment: A manual of basic methods
SN  - x
U1  - 639.2/GUF 
PY  - 1982///
CY  - N.Y.
PB  - Wiley
KW  - Fisheries
N1  - x
ER  -