TY  - GEN
AU  - Michael, A. M.
AU  - Ojha, T. P.
TI  - Principles of Agricultural engineering vol. II: surveying, irrigation, drainage, soil and water conservation 
SN  - 8186321152
PY  - 2003///
CY  - New Delhi
PB  - Jain Brothers
KW  - Agricultural engineering
ER  -