TY  - BOOK
AU  - Alak De, 
TI  - Plane surveying / 
U1  - 526.9 
PY  - 2000///
CY  - New Delhi
PB  - S. Chand
KW  - Surveying
KW  - Chain surveying
KW  - Tacheometry
KW  - Levelling
ER  -