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Bird Migration in the Americas [cartographic Material]

Darley, Richard JDorr, John FNational Geographic Society (U.S.). Cartographic DivisionShupe, John FTeringo, J. RobertWahll, Andrew JNational Geographic Society (États-Unis). Cartographic Division

出版	National Geographic Society, 1979
URL	http://books.google.com.hk/books?id=fQx0LwEACAAJ&hl=&source=gbs_api