Dayal Vikram Economic analysis of a protected area Dayal Vikram - "Delhi," University of Delhi. 2004 - "vii,153p Bibliography: P 143-53" cm. - "Thesis, University of Delhi, Economics (Deptt. of-. University of Delhi, Economics (Deptt. of-), Thesis" . Standard No.: 142651 Source: Thesis and Dissertations Dewey Class. No.: "X, P4/Th"