Conic sections.
Poncelet, Jean Victor,
Traite des propristes projectives des figures. Paris, Bachelier, 1822. xlvi, 426+ pp. 12 folded plates. 4. **E5010.60.
Same. 2e ed., revue, corriges et augmentee. Paris, Gauthier-Villars, 1865,66. 2 v. 18 plates. 4°. 5921.40.