TY  - BOOK
AU  - De,Alak
TI  - Plane Surveying
SN  - 8121917808 (paperback)
U1  - 526.9DE 
PY  - 2013///
CY  - [S.l.]
PB  - S Chand & Co Ltd
KW  - Surveying
KW  - Levelling
UR  - https://books.google.com.pk/books?id=DtTasAdjrcIC&dq=plane+surveying+by+alak+de&source=gbs_navlinks_s
ER  -