Oppermann, A. *8E5125.56 Premiers éléments d’une théorie du quadrilatére complet. — Paris. Gauthier-Villars & ci*. 1919. 76 pp. Diagrams, 24 cm., in 8s. Annexe bibliographique, pp. 67-76.
( “iN > \ y \ - This card was printed at the Boston
M357 — Quadrilaterals.
Public Library, November 12, 1920.
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