TY  - BOOK
AU  - Arun P.S
AU  - Sathian K.K
TI  - Topographic survey and resource mapping using GNSS
U1  - 631.75807 
PY  - 2018///
CY  - Thavanur
PB  - Department of land and water resources and conservation engineering
UR  - https://drive.google.com/open?id=1DuPYxniscekDrJ17yzEFu6wteoOf68Jb
ER  -