173/365, originally uploaded by Dustpuppy72.Max Karl Ernst Ludwig Planck * 23. April 1858 in Kiel† 4. Oktober 1947 in Göttingen
Tag 173: Planck
173/365, originally uploaded by Dustpuppy72.173/365, originally uploaded by Dustpuppy72.173/365, originally uploaded by Dustpuppy72.