The four ethers
Subtitle: contributions to Rudolf Steiner's science of the ethers, elements-ethers-formative forces
By: Ernst Marti ; translated by Eva Lauterbach and James Langbecker; with a foreword by Rolf Hummel.
Publisher: Schaumburg Publications
Published: 1984
Place of publication: Roselle, Ill
Language: eng
Number of pages: 52
Subjects: Steiner, Rudolf, 1861-1925.; Ether (Space)
Notes: Bibliography: p. 46-48.
Translation of: Die vier Äther.
Includes index.