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Report on the Use of Metal Railroad Ties and on Preservative Processes and Metal Tie-plates for Wooden Ties

Edward Ernest Russell Tratman

出版	Department of Agriculture, Forestry Division, 1894
URL	http://books.google.com.hk/books?id=WO_rYBGIulAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN