Rosicrucian Esotericism (CW 109, 111): Lecture 7: Evolutionary Stages of our Earth before the Lemurian Epoch

Rosicrucian Esotericism, a lecture Cycle by Rudolf Steiner given June 3 - 12, 1909 contained in the german volume (GA (CW) 109/111). Chronologically the latter half of The Principle of Spiritual Economy Single German Volume.