000 00259nam a2200073 4500
080 _a
_b
245 _aIS: 1448(P : 4)-1968 :Methods of test for Petroleum and its Products part 4 Ash,Sulphated Ash and water Soluble Ash
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1968
300 _a8p
999 _c26516
_d26516