Data di pubblicazione: 1919
Da: Xerxes Fine and Rare Books and Documents, Glen Head, NY, U.S.A.
Prima edizione
Condizione: VG. Braunschweig 1919 first edition. Yellow octavo wraps. Jahrg. 21. Nr. 11/12. VG+. no owner marks. Vegard article pp. 383-385; Born/Lande reply pp. 385-387. Other articles by other scientists in issue as well.