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Marketing of potato in Farrukhabad District of Western U. P.
(1981)
Production and marketing of potato in India : (a case study of Uttar Pradesh)
Sangwan, Sunanda S., (1991)
Growth and instability in the production and price of potato in India
Singh, Chhotan, (1994)
Agrarian transformation
Singh, Devendra K., (1995)
Constitutional law, II (Excluding political and civil rights)
Singh, D. K., (1978)
A theoretical model for showing spatial diffusion of retail shops
Singh, D. K., (1969)