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Production of Hafnium

H. P. HolmesM. M. BarrH. L. Gilbert

出版	U.S. Department of the Interior, Bureau of Mines, 1955
URL	http://books.google.com.hk/books?id=49rzKqvUNwQC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN