Annual Report of the Chief Signal Officer Made to the Secretary of War for the Year ..
United States. Army. Signal Corps
1880 ජන · U.S. Government Printing Office
ඉ-පොත
1068
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මෙම ඉ-පොත ගැන
The work covers military signaling and the weather service. The latter brand was transferred in 1890, to the Weather Bureau, organized under the Dept. of Agriculture.