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Testing of Coal-cutter Materials for Incendivity and Radiance of Sparks

Robert BlickensderferJohn Edgar KelleyDonald K. DeardorffMark I. Copeland

出版	U.S. Department of Interior, Bureau of Mines, 1972
URL	http://books.google.com.hk/books?id=X9LnGbHbIYgC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN