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The North American Species of Pennisetum

Agnes ChaseAlbert Spear HitchcockCharles Vancouver PiperEmery Clarence LeonardPaul Carpenter StandleySidney Fay Blake

出版	U.S. Government Printing Office, 1927
URL	http://books.google.com.hk/books?id=nSRQAQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN