Federal science progress

Federal science progress

4.11 - 1251 ratings - Source

Two conventional telephone wires connect a subscribera#39;s set with his power line pole. ... more economically by a conventional system using a high strength steel wire that permits spans of double the normal length and. consequently, reduces by half the number of poles. ... A farmer cannot run next door to a neighbora#39;s or down to the comer drug store to telephone for a doctor, policeman, or fireman. ... farm will not only help him in emergencies but also kindle a stronger community spirit.

Title:Federal science progress
Author:Technical Services Office
Publisher: - 1947


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