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James Gregory. Stipple engraving by W. Holl.

James Gregory. Stipple engraving by E. Harding after Count H. D. E. Buchan.

James Gregory. Stipple engraving.

Dr. Gregory's Elements of catoptrics and dioptrics / Translated from the Latin original, with a large supplement, by William Browne.

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Gregory, James, 1638-1675

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Dr. Gregory's Elements of catoptrics and dioptrics / Translated from the Latin original, with a large supplement, by William Browne.