000 00477nam a22001577a 4500
003 OSt
008 090807t xxu||||| |||| 00| 0 eng d
082 _a614.894.43:621-777.6
110 _aIndian standards institution
240 _aIndian standard
245 _aColour identification markings for air-purifying canisters and cartridges
250 _a1st reprint June 1983
260 _aNew Delhi
_bIndian standards institution
_c1977
653 _aIS:8318-1977
942 _cISI
999 _c336339
_d336339