TY  - BOOK
AU  - Duggal, S K,
TI  - Surveying: : Vol II / 
SN  - 9780070534711
U1  - 625.723 
PY  - 2008///
PY  - 2006///
CY  - New Delhi
PB  - Tata Mc Graw Hill
KW  - Surveying
ER  -