The greening of tourism : from principles to practice :  a casebook of best environmental practice in tourism /
Hawkes, Suzanne.
Williams, Peter,1947-
Simon Fraser University.Centre for Tourism Policy and Research.
Canada.Industry, Science and Technology Canada.
Burnaby, B.C. : Centre for Tourism Policy and Research, Simon Fraser University, in co-operation with Industry, Science and Technology Canada and Globe, '92,
1993.
Ecotourism.
Tourism.
Environmental protection