000 00281nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _a331:62(540)
_bREP;1
245 0 _aReport of the study group for heavy engineering
260 _aDelhi
_bNatl Commission on labour
_c1969
942 _cBK
999 _c22039
_d22039