Imprint „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: *protected 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). Email Name Email address IMessage 3 + 7 = Senden