TY - BOOK AU - Jefferson,T.A. AU - Leatherwood,S. AU - Webber,M.A. ED - Fao, Rome (Italy) TI - Marine mammals of the world: (FAO species identification guide) PY - 1993///. CY - Rome (Italy): KW - Mamifero KW - Mamifero aquatico KW - Mar N1 - FAO; 30 refs.; ills ER -