TY  - BOOK
AU  - Duggal, S. K.
TI  - Surveying
SN  - 0-07-053470-5
U1  - 526.9 
PY  - 2004///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Astronomy
KW  - Feild astronomy
KW  - Photogrammetric surveying
N1  - Includes index; SBD
ER  -