000 00202nam a2200073 4500
080 _a
_b
245 _aIS: 1489 PART 2-1991;Portland-pozzolana cement specification
100 _aBUREAU OF INDIAN STANDARDS
260 _aNEW DELHI
_bBIS
_c1991
300 _a8p
999 _c36224
_d36224