Nag, P. (1997). Geography and environment Vol -2 Resanal isue. Concept Pub. House.
Chicago-viite (17. p.)Nag, Prithvish. Geography and Environment Vol -2 Resanal Isue. New delhi: Concept Pub. House, 1997.
MLA-viite (9. p.)Nag, Prithvish. Geography and Environment Vol -2 Resanal Isue. Concept Pub. House, 1997.
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