1. Tourism and Environmental Conservation: Conflict, Coexistence or Symbiosis;Budowski;Environmental Conservation,1976
2. Tourism as an Agent of Social Change;Butler,1975
3. The Impact of Tourism on the Physical Environment;Cohen;Annals of Tourism Research,1978
4. Proposed Research Area at North Yeppoon;Coldrake;Preliminary Report on Environmental Aspects,1974
5. Can Technology Decrease Natural Resource Use Conflicts in Recreation?;Ditwiler;Search,1979