„Few know how much you need to know to know how little you know.“
(Werner Heisenberg)

Jacobs Publishing House
Hans C. Jacobs PhD
Am Prinzengarten 1
D-32756 Detmold
Germany

Fon: 0049 05231 6161885
Email: 
VAT –  Umsatzsteueridentitätsnummer: DE 177 865 481

We use photos from the photo agencies Photodune.net, Deathtothestockphoto.com and Unsplash.com and from Johan Larsson and Daniel Friesenecker (Lizenz CC).