TY  - BOOK
AU  - Dutta, B. N. 
TI  - Estimating and costing in civil engineering: theory and practice including specification and valuation 
SN  - 9788174767295
AV  - 18045-18049 
U1  - 692.5 22
PY  - 2014///
CY  - New Delhi, 
PB  - USB Publishers Distributors Pvt. Ltd. 
ER  -