TY  - BOOK
AU  - Agor, R.
TI  - Textbook of surveying and levelling
SN  - 978-81-7409-235-9 ,
U1  - 627.131  
PY  - 2014///
CY  - New Delhi
PB  - Khanna
KW  - Surveying
KW  - Levelling
ER  -