Webb,J.L.A. Tropical Poineers Human agency and Ecological change in the highlands of Sri Lanka,1800-1900 - OUP N.D. - 243p Cinchona harvesting - Ecological Changes Sri Lanka Highland Ecologies Botanic Garden ISBN: 091-566320-9 = Webb,J.L.A. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 6779 Nat. Bib. Agency Control No.: 577.4(548.7)WEB Subjects--Topical Terms: Environmental Science Universal Decimal Class. No.: 577.4(548.7)