Hartmann, Johannes Franz, 1865- **E5142.41.42 Ueber eine einfache Interpolationsformel fiir das prismatische Spec- trum. Von J. Hartmann. — Potsdam. 18908. 25, (1) pp. Tables. [Astrophysikalisches Obser- vatorium, Berlin. Publicationen. No. 42.] 30 cm., in 4s.
 
This card was printed at the Boston ae Vublic Library, May 29, 1934. /
D4874 — S.r.c. — Light. Dispersion.