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Observations on the nature and theory of vision: with an inquiry into the cause of the single appearance of objects seen by both eyes. By John Crisp, F. R. S.
- Crisp, John, F.R.S.
- M.DCC.XCVI. 
About this work
London : printed for J. Sewell, NO. 32, Cornhill, M.DCC.XCVI. 
xvi,178,p.,plate ; 80.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. (Eighteenth century collections online). Available via the World Wide Web. Access limited by licensing agreements.