Gerard, Eric Mary, 1856-1916. Electricity and magnetism [microform] / by Eric Gerard ... ; tr. from the 4th French ed. under the supervision of Dr. Louis Duncan, by R.C. Duncan ...

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Gerard, Eric Mary, 1856-1916.

Electricity and magnetism [microform] / by Eric Gerard ... ; tr. from the 4th French ed. under the supervision of Dr. Louis Duncan, by R.C. Duncan ...