TY  - BOOK
AU  - Birendra Kumar
TI  - Study on Comparative Economics of Tractor and Bullock Operated Farms (District, Patna) / 
U1  - 338.109 
PY  - 1976///
CY  - .- Dholi, Muzaffarpur
PB  - : TCA
KW  - Agricultural Economics
KW  - Tractor
KW  - Thesis
KW  - M.Sc
ER  -