Proceedings of the American Academy of Arts and Sciences, Volumen79
Metcalf and Company, 1951
Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell.
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Centennials and Sesquicentennials during 1951 with
Continuous Casting of Steel ISAAC HARTER
Certain SemiConductors P W BRIDGMAN
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