References 



Holt, S.J. and L.M. Talbot 



1978. New Principles for the Conservation of Wild Living 

 Resources. Wildlife Monographs #59, 33 p. 



Marine Mammal Commission 



1976. The Concept of Optimum Sustainable Yield 



Odum , E . P . 



1971. Fundamtentals of Ecology , Third Edition. W.B. Saunders 

 Co. Philadelphia. 



Ricker, W.E. 



1975. Computation and interpretation of biological statistics 

 of fish populations. Bull. Fish. Res. Board Can. 

 191: 382 p. 



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