- Title: Letters concerning mind. To which is added, a sketch of universal arithmetic; comprehending the differential calculus, and the doctrine of fluxions. By the late Reverend Mr. John Petvin, A. M. Vicar of Ilsington in Devon.
- Date Published: 1750
- Place Published: London
- Publisher: printed for John and James Rivington, in St. Paul's Church-Yard
- Subject: Religion and Philosophy
- ESTCID: T109697
- Number of Ornaments: 28
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