TY  - BOOK
AU  - Duggal, S. K.
TI  - Building materials / 
SN  - 8120412214
U1  - 691 DUG  23
PY  - 1997///.
CY  - New Delhi
PB  - Oxford & IBH Publishing, 
KW  - Building materials
N1  - Includes index.
ER  -