Seals :  proceedings of a Working Meeting of Seal Specialists on Threatened and Depleted Seals of the World, held under the auspices of the Survival Service Commission of IUCN, 18-19 August 1972 at the University of Guelph, Ontario, Canada / 
International Union for Conservation of Nature and Natural Resources. 
 - Morges, Switzerland :  International Union for Conservation of Nature and Natural Resources,  1973. 
 - 176 p. ;  mapas ;  30 cm. 
 - IUCN publications New series. Supplementary paper ;  no. 39 .
<br/><br/>Incluye referencias bibliográficas  
<br/><br/><br/>Inglés 
<br/><br/><label>Dewey Class. No.: </label>599.7973