TY  - BOOK
AU  - Sparre, Per
AU  - Ursin, Erik
TI  - Introduction to Tropical Fish Stock Assessment Part 1- Manual: FAO Fisheries Technical Paper No.306/1 (T306/1)
PY  - 1989///,
CY  - Rome
PB  - Food and Agriculture Organization
UR  - http://www.fao.org/docrep/W5449E/W5449E00.htm
ER  -