Joining the Kamchatka Peninsula to the common telegraph network with a wireless telegraph

Gaigalis, K.K.The connection of the Kamchatka peninsula to the general telegraph network with a wireless telegraph / [so-out] Electric engineer K.K.Gaygalis.- St. Petersburg: Type.M-vr.cases, 1911. -[2], 54 p., 2 l.Il.: il., Count., schemes., table., Damn., Cards .. -Dep.Ott.From the postal and telegraph magazine, Prince.I, II, III and IV - 1911 .. - Ex.: Without region..1. Territory (collection).Electronic copy source: PBPlace of storage of the original: the Central Museum of Communications named after A.S.Popova