La evoluo de la telefonio:
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Bibliographic Details
Main Author: Isbrücker, J. R. G. 1889-1967 (Author)
Format: Book
Language:Esperanto
Published: Berlin Mosse, Esperanto-Fako 1928
Series:Biblioteko tutmonda 21/22
Subjects:
Physical Description:48 S., [7] Bl. Ill.

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!