North Pacific fur seal commission report on investigations from 1967 through 1972. 

 - xv; 212 páginas. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ARCTOCEPHALINAE.<br/>DINAMICA DE POBLACION.<br/>MORTALIDAD.<br/>COMERCIO.<br/>LOBOS MARINOS.<br/>MAMIFEROS MARINOS.<br/>CALLORHINUS URSINUS.<br/>OTARIIDAE.<br/>PINIPEDOS.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>OCEANO PACIFICO NORTE.
<br/><br/><label>Dewey Class. No.: </label>599.7