Some more brilliant covers from N+M (Naturwissenschaft und Medizin) Magazine. They were designed by Erwin Poell in the late 60′s. These are such incredible examples, not only are they beautiful, but they are no doubt conveying some extremely complex concepts through information design. There is apparently a book covering Poell’s work (via Thingstolookat):
Title: Entwürfe für den Alltag. Typografie, Grafik-Design, Art Direction
Author: Erwin Pœll
Publisher: Birkhäuser Verlag Basel
Also check out Things To Look At’s article on Poell and the N+M covers.