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Google圖書搜尋
Assessment and Improvement of Motorist Understanding of Traffic Control Devices
John Michael Mounce
H. Gene Hawkins
Katie N. Womack
出版
Texas Transportation Institute, the Texas A&M University System
, 1991
URL
http://books.google.com.hk/books?id=SxXUKyMIW1cC&hl=&source=gbs_api