TY  - BOOK
AU  - Bureau of Indian Standards
TI  - Method of Identification of Natural Building Stones (IS : 1123 - 1975)
U1  - IS : 1123 - 1975 
PY  - 1975///
CY  - New Delhi
PB  - Bureau of Indian Standards
KW  - Indian Standard - IT
N1  - IS : 1123 - 1975
ER  -