Knowledge of the higher world and its attainment
Subtitle: a revised and enlarged edition of 'The way of initiation' with 'Initiation and its results'
By: Authorized English translation by G. Metaxa. Edited by H. Collison.
Publisher: G.P. Putnam's Sons
Published: 1923
Place of publication: London; New York
Language: eng
Notes: Originally published in German as 'Wie erlangt man Erkentnisse der höheren Welten'.