000 00311nam a2200109Ia 45e0
008 181001s1961 xx 000 0 und d
100 _aIS:813 - 1961
245 0 _aScheme of symbols for welding
260 _aNew Delhi
_bI.S.I. New Delhi
_c1961
300 _a40
942 _2ddc
_cBK
999 _c3047
_d3047