Tisdell, Clem. Tourism economics, the environment and development : analysis and policy / Clem Tisdell. - Cheltenham, UK : Edward Elgar, 2001. - viii, 371 p. : ill. ; 25 cm. Include index. ISBN: 1840642769 RM 414.70 Subjects--Topical Terms: Tourism--Economic aspects.Ecotourism--Economic aspects.Sustainable development.