00558nam a2200193Ia 4500082002400000100004400024245006000068250001300128260003100141300000900172490001700181500000500198690000600203700000500209952010600214964001700320921001000337999001700347  a661.320212bIn39.IS  aIndian Standards Institution, New Delhi  aIndian standard specification for soda ash, technicalb  a3rd Rev.  aNew DelhibThe Auth.c1982  a16p.  aIS  251-1982  a  a   a  00104070aISIbISId1998-10-08l0o661.320212 In39.ISpDP20119r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a16249  c16249d16249