Statistics compiled from various sources relating chiefly to trackless trolley development in Great Britain, Germany, Italy and Soviet Union. From Ferrocarriles y Tranvias, date not specified.
Trolleybus development in Europe
Ry Gaz
Railway Gazette and Railway News ; 74 , n 20
1941
Article (Journal)
English
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Engineering Index Backfile | 1939
|Engineering Index Backfile | 1933
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