Roy Chowdhury, S. K., & Shukla, P. R. (1991). Encyclopaedia of economic development V.15: Agriculture, productivity and rural economy. Akashdeep Publishing House.
Παραπομπή Chicago StyleRoy Chowdhury, S K., και P R. Shukla. Encyclopaedia of Economic Development V.15: Agriculture, Productivity and Rural Economy. New Delhi: Akashdeep Publishing House, 1991.
Παραπομπή MLARoy Chowdhury, S K., και P R. Shukla. Encyclopaedia of Economic Development V.15: Agriculture, Productivity and Rural Economy. Akashdeep Publishing House, 1991.
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