TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Specification for fly ash for use as pozzolana and admixture,IS:3812-1981 
U1  - 662.613 
PY  - 1981///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -