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The Slotted Cone Splitter

Francis James FlanaganR. C. KellagherWilliam L. Smith

出版	U.S. Department of the Interior, Geological Survey, 1958
URL	http://books.google.com.hk/books?id=cQ76zz-ax9gC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN