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Google圖書搜尋
Public Participation in Wilderness and Backcountry Litter Control
Colin D. MacLean
H. Gratkowski
Jack Ward Thomas
Robert E. Martin
Robert M. Muth
Robert M. Randall
Roger H. Twito
其他書名
A Review of Research and Management Experience
出版
Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
, 1978
URL
http://books.google.com.hk/books?id=1pebAQAACAAJ&hl=&source=gbs_api