000 00608 a2200289 4500
001 31802
020 _a9
041 _aeng
080 _a666.94 Fro
245 _aFly ashes in cements and concretes : technical needs and opportunities
250 _a
260 _aWashington, DC
260 _bNational Bureau of Stds,
260 _c1981
300 _avii,27 p.
300 _c27 cm
490 _a
100 _aFrohnsdorff, Geoffrey
700 _aClifton, James R.
700 _a
650 _a
650 _aFly ash
650 _aCement
650 _aConcrete
942 _cBK
942 _2UDC
999 _c88734
_d88734