TY  - GEN
AU  - Roy , S. K.
TI  - Fundamentals of surveying
SN  - 8120312600
U1  - 526.9 
PY  - 2006///
CY  - New Delhi
PB  - Prentice-Hall 
KW  - SURVEY
KW  - MEASUREMENT
KW  - LEVELLING
KW  - COMPASS SURVEY
KW  - CURVES
ER  -