George Ashley Campbell (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "George Ashley Campbell" in English language version.

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1books.google.com

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archive.org

CAMPBELL, George Ashley, in Who's Who in America (1926 edition); p. 407

books.google.com

"Campbell, George Ashley", in Fritz E. Froehlich, Allen Kent, The Froehlich/Kent Encyclopedia of Telecommunications, vol. 2 (CRC Press, 1991), p. 242