Pi. Mathematical term,
Smith, David Eugene. 1860- No. 9 in **E.5123.66 The history and transcendence of z. Illus. (In Young, Jacob W. A., editor. 1865- Monographs» on topics of modern mathematics... Pp. 387-416. New York. IQII.)
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This card was printed at the Boston Public Library, October 27, 1971. H6213 — Mathematics. Hist. — Pi. Math. term.