TY  - GEN
AU  - Duggal , S. K.
TI  - Surveying
SN  - 0074620894
U1  - 526.9 
PY  - 2002///
CY  - New Delhi
PB  - Tata Mcgraw -Hill 
KW  - COMMON SURVEYING OPERATIONS
KW  - SURVEYING
KW  - CACULATIONS IN S.I. UNITS
ER  -