Kariyawasam, Champika S. RATNAYAKE, Sujith. S An economic valuation of the recreational benefits from the Royal botanic gardenas peredeniya Sujith S.Ratnayake, Champika S.Kariyawasam - Colombo The Department of National Planning Ministry of Development and implementation 2002 - xi, 86 p. ISBN: 955-9017-13-6 Subjects--Topical Terms: Recreation Dewey Class. No.: 333.78095483 / RAT