00442nam a22001457a 4500008004100000082001200041100001800053245010100071260002100172502004200193650001400235650001200249650001600261650001900277141231b        xxu||||| |||| 00| 0 eng d  aCD10498  aKhatri, Umesh  aAn economic valuation of invasive species (a case study of water hyacinth in Phewa lake, Pokhara  aKathmandu:c2014  aDissertationbDegree in EconomicscTU  aEconomics  aSpecies  aEnvironment  aEconomic value