Ein interessantes e-book zum Thema Radioaktivität:
https://books.google.at/books?id=cbYk4W4xG84C&pg=PA1&lpg=
PA1&dq=der+strahlende+doppeladler&source=bl&ots=dp57EcXg0J&sig=KbUHFDvmT2oBPphUPTPuYZczpBE&hl=de&sa=
X&ved=0CCwQ6AEwAmoVChMI95f79
7DixwIVRdcUCh1S6QDN#v=onepage&q
=der%20strahlende%
20doppeladler&f=false
https://books.google.at/books?id=cbYk4W4xG84C&pg=PA1&lpg=
PA1&dq=der+strahlende+doppeladler&source=bl&ots=dp57EcXg0J&sig=KbUHFDvmT2oBPphUPTPuYZczpBE&hl=de&sa=
X&ved=0CCwQ6AEwAmoVChMI95f79
7DixwIVRdcUCh1S6QDN#v=onepage&q
=der%20strahlende%
20doppeladler&f=false