Speco'a astronomica Vaticana.
Hagen, Johann Georg, 1847- Die veranderlichen Sterne. — Freiburg. Herder & Co. G.M.B.H. 1921, 24. 2v. Charts. Dia-
grams. Tables. [Specola astroncmica Vaticana. 5,6.] 31 cm., in 4s.
**FE.5141.40
Contents. —1. Geschichtlich-technischer Teil, von Johann Georg Hagen. 2. Mathematisch-physikalischer Teil, von Johann Stein. Literaturverzeichnis, vol. 1, pp. xii-xx; vol. 2, pp. x—xx.
This card was printed al the Boston Public Library, December 14, 1926. N3593 — Double main card.— Hag nn Georg, 1847-. (M1)—Stein, Johann,
S.J. (M2) — Stars. Variable. (1) — S.r. (1)