000 00252 a2200109 4500
082 _a671
_bNAW
245 _aInstructor manaual
_b: Welding (Arc & Gas)
260 _aIslamabad:
_bN, T, B,
_c1986.
300 _b126p
650 _aWelding
_9126214
942 _cBK
999 _c2185
_d2185