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Google圖書搜尋
An Experiment in Roadmaking
Charles Holmes Pettee
New Hampshire Agricultural Experiment Station
出版
New Hampshire College Agricultural Experiment Station, New Hampshire College of Agriculture and the Mechanic Arts
, 1895
URL
http://books.google.com.hk/books?id=wW4NRQAACAAJ&hl=&source=gbs_api