TY  - BOOK
AU  - Agor, R
TI  - Textbook of surveying and levelling
SN  - 9788174092359
U1  - 526.9 AGO-R 
PY  - 1987///
CY  - India
PB  - Khanna Publishers
KW  - Levelling
KW  - Surveying
ER  -