Statistical data; report shows that volume of wood treated increased 8 1/4% as compared to 1939; piles continue to gain. Extracts from U S Forest Service Report. (see also Ry Eng and Maintenance v 37 n 9 Sept 1941 p 603-4 and 606)
Wood preservation continues uuward trend in 1940
Ry Age
Railway Age ; 111 , n 7
1941
3 pages
Article (Journal)
English
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