The four lectures in this volume were given in Vienna, September 27 to
October 1, 1923. In the Collected Edition of Rudolf Steiner's works,
the volume containing the German texts is entitled, Der
Jahreskreislauf als Atmungsvorgang der Erde und die vief grossen
Festeszeiten (Vol. 223 in the Bibliographic Survey). They were
translated by Samuel and Loni Lockwood.
Copyright 1946 by Henry B. Monges. ISBN 0-88010-007-9
2nd Printing 1982
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