A manual for the ranks of the equestrian half-sequential and hundreds

PrzhevalinskyA manual for the ranks of the equestrian-telegraph half-outlet and hundreds / comp.pcs.-captain Przhevalinsky.- St. Petersburg: military.Type., 1905. -47 p.: silt .. -Contents: Galvanic batteries.Elements tester.Heliography.Optical apparatus for night action.Field microelephone station..1. The people (collection).Electronic copy source: PBPlace of storage of the original: the Central Museum of Communications named after A.S.Popova