1293258 Quadrant Electrometers. W. E. Ayrton, J. Perry, W. E. Sumpner.

Quadrant Electrometers

First Edition. 8vo, paged [53]-58; gray cover with black print, peripheral tanning, tears at top corners and bottom left corner, tears along spine edge, upper right corner bumped and creased throughout, light spotting; interior clean but for light spotting; "From the Proceedings of the Royal Society, Vol. 50"; "Received May 19, 1891."


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