Gray, Andrew, F.Rs. **E5089a.82
The theory and practice of absolute measurements in electricity and magnetism.
London. Macmillan & Co. 1888-93. 2 v. in 3. S.m8°. An extension of the author’s work published in 1884, Absolute measure- ments in electricity and magnetism [5969a.40].
[This work is kept on the Special Libraries Floor.]
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This card was printed at the Boston Public Library, June 9, 1909. H316 — Electrical measurement.