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Google圖書搜尋
Photometric Requirements for Portable Changeable Message Signs
Melisa Dayle Finley
出版
College Station, Tex.: Texas Transportation Institute, Texas A & M University System ; Springfield, Va.: National Technical Information Service
, 2001
URL
http://books.google.com.hk/books?id=4bl60AEACAAJ&hl=&source=gbs_api