APA
Chandhra shekhar azad university of agrculture and technology D. o. a. E. a. s. K. I., .Costs and returns of important crops in U.P (1980 -81). Kanpur: .
Chicago
Chandhra shekhar azad university of agrculture and technology Department of agricultural Economics and statistics Kanpur India, .Costs and returns of important crops in U.P (1980 -81). Kanpur: .
Harvard
Chandhra shekhar azad university of agrculture and technology D. o. a. E. a. s. K. I., .Costs and returns of important crops in U.P (1980 -81). Kanpur: .
MLA
Chandhra shekhar azad university of agrculture and technology Department of agricultural Economics and statistics Kanpur India, .Kanpur: . .
