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Gas Mask for Protection in Air Against All Gases, Vapors, and Smokes
Arno Carl Fieldner
Sidney Hershberg Katz
H. W. Frevert
Edward George Meiter
出版
U.S. Department of Commerce, Bureau of Mines
, 1925
URL
http://books.google.com.hk/books?id=e2akvAEACAAJ&hl=&source=gbs_api