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Bridge Inspector's Manual for Movable Bridges

United States. Federal Highway AdministrationEarle Bridge Machinery Company of New Jersey

出版	Department of Transportation, Federal Highway Administration, Office of Engineering, Office of Development, 1977
URL	http://books.google.com.hk/books?id=7wbx-1wn4oAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN