Phelps, Robert. - An Elementary Treatise on Optics: Intended chiefly to elucidate the principles of the construction of telescopes, and some other optical instruments.

Cambridge: printed by W Metcalfe, published by E Johnson, 1835. vii[i], 224 pp, text diagrams. Original paper boards with later paper spine. 23 cm x 15 cm. Boards well soiled with random marks, rubbing to edges & minor loss to corners, small loss to upper section of rear free endpaper, contents lightly age browned.

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