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The Geology and Paleontology of the Cuenca, Azogues, Biblian Region Provinces of Canar and Azuay, Ecuador

Alfred Richard LoeblichJohn West WellsLouise Merrimon PerryRalph Alexander LiddleWilliam Clyde Ikins

出版	Paleontological research institution, 1940
URL	http://books.google.com.hk/books?id=temguwEACAAJ&hl=&source=gbs_api