sigh007 发表于 2012-3-29 11:53:47

MIL-S-6049A (AMENDMENT 1)


                   MIL-S-6049A (AMENDMENT 1), MILITARY SPECIFICATION, STEEL, CHROME-NICKEL-MOLYBDENUM (8740) BARS AND REFORGING STOCK (AIRCRAFT QUALITY) (23 JUN 1970) .         
         
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