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Distribution of Wheel Loads on Timber Bridges

Erwin Carl Olaf EricksonK. M. Romstad

出版	U.S. Department of Commerce, National Bureau of Standards, Institute for Applied Technology; Distributed by: Clearinghouse for Federal Scientific and Technical Information, 1968
URL	http://books.google.com.hk/books?id=lMBkTVr1JkoC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN