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file U (Stack)Clifford, E.
Arithmetic Considerations on Marquoi's Parallel Scales, and the Protractor. Method of computing the equivalents of scales
Published by the author in 1841 at 80, Grosvenor Street, Grosvenor Square, London, W. and printed by T. Brettell, Rupert Street, Haymarket, London
[Unknown]
1841