3 ms·
I had never heard about this befoere. Now I have: https://en.wikipedia.org/wiki/Deutsche_Physik https://en.wikipedia.org/wiki/Deutsche_Physik
by klausjensen 8y ago
I had never heard about this befoere. Now I have:
https://en.wikipedia.org/wiki/Deutsche_Physik https://en.wikipedia.org/wiki/Deutsche_Physik