. On Acquired Radio-Activity . Fie 6. Fig. 7. Croohes. Phil. Trans., A, vol, 214, Plate

---

Size: 1695px × 1474px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookaut, bookcentury1900, bookdecade1910, bookidphiltrans04238400