TY  - BOOK
AU  - S.C. Markanda
AU  -  S.B. Sehgal, 
TI  - Textbook of elementary surveying
U1  - 25339 
PY  - 1964///
CY  - Delhi
PB  - Khanna Publishers
N1  - S.C. Markanda & S.B. Sehgal: Textbook of elementary surveying.  Delhi.  Khanna Publishers, 1964.--(25339MAR)
ER  -