TY  - GEN
AU  - Duggal, S K
TI  - Surveying vol.1
SN  - 978-0-07-015137-6
U1  - 624:528.4 
PY  - 2009///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - 624:528.4
ER  -