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Foodgrains production in India : impact of techno-environmental factors
Kumar, Ashok, (1988)
Food and feed grains : wheat, rice, maize, barley, and other cereals
Mackie, Arthur B., (1968)
Trends and variability of rice, maize, and wheat yields in South Asian countries : a challenge for food security
Poudel, Mahadeb Prasad, (2012)