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Revised Progress Report on Improvement in Gun Steel Ingot Practice (OD-34-3) : Classification of Bore Defects in Seamless Gun Tubes

Robert Franklin MehlJ. W. SpretnakC. F. Sawyer

出版	National Defense Research Committee of Office of Scientific Research and Development, War Metallurgy Division, 1944
URL	http://books.google.com.hk/books?id=xxGYtAEACAAJ&hl=&source=gbs_api