共 79 条
[31]
Grossman G., 1991, Environmental Impacts of a North American Free Trade Agreement, DOI [10.3386/w3914, DOI 10.3386/W3914]
[36]
Holden A, 2009, ECOTOURISM AND ENVIRONMENTAL SUSTAINABILITY: PRINCIPLES AND PRACTICE, P17
[37]
Houghton JT, 2001, CLIMATE CHANGE 2001: THE SCIENTIFIC BASIS, P1
[39]
Tourism and the environment; A sustainable partnership
[J].
SCOTTISH GEOGRAPHICAL MAGAZINE,
1996, 112 (02)
:107-113
[40]
Hunter Colin., 1995, Tourism and the Environment: A Sustainable Relationship