To Alfred Klemm on the Occasion of his 100th Birthday
This first issue of Volume 68a of Zeitschrift f¨ur Naturforschung (ZfN) A is dedicated to Professor Alfred Klemm on the occasion of his 100th birthday on February 15, 2013. Alfred Klemm founded ZfN together with Hans Friedrich-Freksa in 1945, the first issues of Vol. 1 appearing in early 1946.
In highest appreciation of a great scientist, editor, and publisher.
Philippe Bopp, Guest-Editor Isao Okada, Guest-Editor
Siegfried Grossmann, Editor in Chief