Kumar, A. Roy, P.K. Environmental resource management - Daya Publishing House New Delhi 2008 - 577p. - Environmental resource management India Bangladesh Medicinal orchids Surface water ISBN: 9788170355519 = Environmental resource management Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 7071 Nat. Bib. Agency Control No.: 577.4 ENV Subjects--Topical Terms: Environmental Sciences Universal Decimal Class. No.: 577.4