000 00281nam a2200109Ia 4500
008 140122s9999 xx 000 0 und d
082 _a ISI
100 _aISI
245 _aIndian standard for voice pipe and voice pipe fillings IS 3943 - 1966
260 _b
_c1966
942 _cBK
_2ddc
999 _c1098
_d1098