003950000a2200121000450024500770000065000310007765000150010865000290012365100150015204100130016710000250018077300680020510aRole of plant-pollinator interactions in determining community structure14aEstructura de la comunidad14aEcología14aRelación planta-animal 4pCosta Rica0 aInglés1 aHeithaus, E. Reymond1 tAnnals of the Missouri Botanical Garden3157h61q675-691d1974