TY  - GEN
AU  - Duggal, S K 
TI  - Surveying II, 3/e
SN  - 978-0-07-015135-2
PY  - 2009///
CY  - New Delhi
PB  - McGraw-Hill
KW  - Triangulation
KW  - GIS
KW  - Global Positioning System
UR  - http://mcgrawhilleducation.pdn.ipublishcentral.com/pdfreader/surveying-ii-3e
ER  -