Investigations of poles used by Silesian Narrow-Gage Railway Corp., Kattowitz, show that described type are a great deal more durable than ordinary steel poles and require practically no maintenance.
Reinforced-concrete poles
Eisenbetonmaste
Verkehrstechnik ; 38 , n 24
1921
3 pages
5 Figs.
Aufsatz (Zeitschrift)
Deutsch
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