Kumar, A. (1979). Geomorphology of Simdega and its adjoining area, Bihar. National Geographical Society of India.
Chicago-referens (17:e uppl.)Kumar, Anil. Geomorphology of Simdega and Its Adjoining Area, Bihar. Varanasi: National Geographical Society of India, 1979.
MLA-referens (8:e uppl.)Kumar, Anil. Geomorphology of Simdega and Its Adjoining Area, Bihar. National Geographical Society of India, 1979.
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