005930000a2200157000450024501250000065000280012565000280015365000290018165100110021065300350022104100130025670000390026910000330030811000380034177300560037910aInternational centre for manatee research: report of a Workshop neid 7-13 february 1974 Georgetown. Guyana South America14aMamíferos acuáticos14aEspecies en extinción14aContaminación del agua 4pGuyana gTrichechuseTrichechus manatus0 aInglés1 aInternational Development Research1 aNational Academy of Sciences1 aNational Science Research Council1 tNational Science Research Council3216q1-33d1980?