TY  - GEN
AU  - Punmia, B.C.
AU  - Jain, Ashok Kumar
AU  - Jain, Arun Kumar
TI  - Surveying vol.3 : field astronomy, photogrammetric surveying, electromagnetic distance measurement (EDM)
SN  - 8170080541
PY  - 1990///
CY  - New Delhi
PB  - Laxmi
KW  - SURVEYING
N1  - In SI units
ER  -