TY  - BOOK
AU  - Duggal, S.K.
TI  - Surveying, Vol-I
SN  - 978-0-07-015137-6
PY  - 2011///
CY  - New Delhi
PB  - Tata mcgrawhill pub.
KW  - Civil
N2  - Engineering
UR  - https://www.google.co.in/books/edition/Surveying/NYUEeDJcVbEC?hl=en&gbpv=1&dq=surveying+S.K.Duggal+pdf&printsec=frontcover
ER  -