TY  - BOOK
AU  -  Duggal, S. K
TI  - Surveying ,V.2
SN  - 9780070151352
U1  - 526.9 
PY  - 2009///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Remote sensing
KW  - Surveying
KW  - Geographic information systems
ER  -