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Pollen and Spores from the Permian Deposits of the Cherdynʹ and Aktyubinsk Areas, Cis-Urals

Arthur H. DoerrDearl T. RussellHarrell Leroy StrimpleLeonard Richard WilsonMaxim Konradovich EliasPhilip K. WebbRobert E. VanderpoolS. R. SamoĭlovichCarl Colton Branson

出版	University of Oklahoma, 1961
URL	http://books.google.com.hk/books?id=A1q0uwEACAAJ&hl=&source=gbs_api