00326nam a2200133 a 4500008004100000050001500041100002900056245003300085250001200118260000900130350000900139650001200148650003200160120416s1971    xx |||||||||||||| ||    u  aTS 227 Gia  aGiachino, Joseph William10aWelding skills and practices  a4th ed.  c1971  a0.00  aWELDING  aWELDING--STUDY AND TEACHING