Rudolph Steiner,The Philosophy of Spiritual Activity: A Modern Philosophy of Life Developed by Scientific Methods, trans. by Reinhold Friedrich Alfred Hoernle and Mrs. Reinhold Friedrich Alfred Hoernle (London: G. P. Putnam's Son, 1922), p. 382.
- Classification (DDC)
- 299.935
- Classification (IAP)
- IPL
- Pages
- 382
- Published in
- London