000 00268nam a2200121Ia 4500
020 _a9789383182558
100 _aKhanna O.P.
_91750
245 _aWelding Technology
250 _a22 ed
260 _bDhanpat Rai publication
300 _a47.12
_bRs:310
490 _a19875
999 _c19875
_d19875