TY  - BOOK
AU  - Duggal, S. K.
TI  - Surveying. Vol.2
SN  - 0074620894
U1  - 624.11 
PY  - 1996///
CY  - New Delhi
PB  - Tata McGraw Hill Pub. Co. Ltd.
KW  - Environmental law
KW  - Remote sensing
KW  - Geographic information systems
N1  - ENG
ER  -