Results of test on Delas air extractor, manufactured by Societe Condenseurs Delas, with regard to its use in reducing steam consumption.
Tests of a "Delas" air extractor
Elec. Ry. Tramway Jl
Electric Railway and Tramway Journal ; 46 , n 1130
1922
2 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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