Singh, A. K. (1991). Perspective plan for conservation, management, and development of land resources for Central Zone of India. Giri Institute of Development Studies.
Citace podle Chicago (17th ed.)Singh, Ajit Kumar. Perspective Plan for Conservation, Management, and Development of Land Resources for Central Zone of India. Lucknow: Giri Institute of Development Studies, 1991.
Citace podle MLA (8th ed.)Singh, Ajit Kumar. Perspective Plan for Conservation, Management, and Development of Land Resources for Central Zone of India. Giri Institute of Development Studies, 1991.
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