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Google圖書搜尋
Use of Aerial Photographs to Evaluate the Recreational Resources of the Connecticut River in Massachusetts
William Preston MacConnell
George Peter Stoll
出版
Experiment Station, College of Agriculture, University of Massachusetts
, 1968
URL
http://books.google.com.hk/books?id=7rksAQAAMAAJ&hl=&source=gbs_api