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Outdoor Recreation

Douglas M. Knudson

出版	Macmillan, 1980
主題	Business & Economics / ManagementBusiness & Economics / Industries / Natural Resource ExtractionNature / Natural ResourcesTravel / Special Interest / Adventure
ISBN	00236535079780023653506
URL	http://books.google.com.hk/books?id=FrosAQAAMAAJ&hl=&source=gbs_api