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Impact of Large Recreational Developments Upon Semi-primitive Environments
Montana State University (Bozeman, Mont.). Center for Interdisciplinary Studies
其他書名
An Overview of the MSU-NSF Gallatin Canyon Study
出版Montana State University, 1973
URLhttp://books.google.com.hk/books?id=VLIrAQAAMAAJ&hl=&source=gbs_api