Nag,Prithvish. Geography and Environment Vol : 1,2,3. by Prithvish Nag, V.K. Kumara & Jagdish Singh - 1st Ed. Rep. - New Delhi: Concept Publishing Company, 1997. - 281p.: 15cm. ISBN: 8170226058 Subjects--Index Terms: Geography & travel , Geography Dewey Class. No.: 910