Die Radioaktivität. . . .
Leipzig: Verlag von Johann Ambrosius Barth, 1904. 8vo. xii, 216 pp., including index. FIRST EDITION IN GERMAN. With 1 plate (containing 2 photographic illustrations) and numerous text illustrations. Original publisher's cloth; from the library of Adriaan van Maanen, with his presentation book-label to the library of the Mount Wilson Observatory..... More