Zeitschrift für Naturforschung, German for "Journal for Nature Research," was founded in 1946 by a group of scientists from the Kaiser Wilhelm Institute. It has been split into three volumes – A, B, and C – one for each of the three branches it covers: physics, chemistry, and biosciences. It has new issues monthly. Volumes that were published prior to 2011 have been made free to access. Although it was once published in German, it is now published in English.