Sehgal, J. L. (1992). Agro -ecological regions of India. Oxford and IBH publishing.
Chicago Edition CitationSehgal, J L. Agro -ecological Regions of India. New Delhi: Oxford and IBH publishing, 1992.
Deismireacht MLASehgal, J L. Agro -ecological Regions of India. Oxford and IBH publishing, 1992.
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