000 00271nam a2200109Ia 4500
008 230222s9999 xx 000 0 und d
100 _aKhanna O P
245 2 _aA Textbook of Welding Technology
250 _a1
260 _bDhanpat Rai & Co.,New Delhi
_c1999
942 _cBK
999 _c31696
_d31696