MORPHOLOGY and ecology of marine mammals: seals, dolphins,porpoises 
/ edited by K.K. Chapskii, V.E.Sokolo; translated by H.Mills 
 - New York  John Wiley  1973 
 - viii, 232 p. 
<br/><br/><label>ISBN: </label>070651307X 
<br/><br/><label>Dewey Class. No.: </label>599.53  / MOR