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o To wifroix ARE Andrip,
WV. FMY NTS
2. OF
* o PLANE AND SPHERICAL
T. R. I G O N O M. E. T. R. Y.
* . BY JOHN PLAYFAIR, F. R. S. Lono. & EDIN.

Professor of Natural Philosophy, formerly of Mathematics, in the University of Edinburgh.

First PHILADELPHIA, FROM THE LAst London EDITION, ENLARGED.

PHILADELPHIA:
PUBLISHED BY MARot & WALTER,
* No. 87, Market-street.
| Printed at No. 24, Arch-street.-A. Walker, Agt,
| - 1826.

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