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Seed Dispersal an Species Definition of Polygala (Polygalacea) in the Guianas

Jasper van Ruijven

出版	Herbar Division, Dpt. of Plant Ecology and Evolution Biology, Utrecht University, 1998
URL	http://books.google.com.hk/books?id=pvDNkQEACAAJ&hl=&source=gbs_api