共 45 条
[1]
Baden J., Stroup R.L., Bureaucracy vs. environment, (1981)
[2]
Bastrom A.F., (1986)
[3]
Brooks P., Jones C., Economic conditions in Montana, (1989)
[4]
Cenarrusa P.T., Idaho blue book 1989–1990, (1990)
[5]
Clawson M., Outdoor recreation: twenty‐five years of history, twenty‐five years of projection, Leisure Science, 7, 1, pp. 73-99, (1987)
[6]
Greater Yellowstone Ecosystem, (1987)
[7]
Dailey R., The Montana travel industry, (1984)
[8]
(1989)
[9]
Wyoming data handbook 1989, (1989)
[10]
Montana business birth–death study 1984‐1986, (1988)