000 00221nam a2200073 4500
080 _a
_b
245 _aIS: 3812 - 1981; Specification for Fly Ash for Use as Pozzolana and Admixture
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1981
300 _a9p
999 _c30129
_d30129