004740000a2200145000450024501050000065000280010565000090013365000180014265000160016065000310017665100360020704100130024310000200025677300520027610aBats versus birds: comparisons among Peruvian volant vertebrate faunas along an elevational gradient14aCompetencia ecológica14aAves14aMurciélagos14aEvolución14aDistribución altitudinal 4lCordillera de los AndespPerú0 aInglés1 aGraham, Gary L.1 tJournal of Biogeography3248h17q657-668d1990