Volume 145 of Rudolf Steiner's Complete Works
Section of the the Complete Works:
Private Lectures to the Members of the Anthroposophical Society

A cosiderably expanded and much more up-to-date version of this database is available in the Aelzina Books Complete Works Database.

German Title:

Welche Bedeutung hat die okkulte Entwicklung des Menschen für seine Hüllen - physischen Leib, Ätherleib, Astralleib - und sein Selbst?

Title in Literal English Translation:

What Significance does Occult Development of the Human Being have for his Sheathes - Physical Body, Etheric Body, Astral Body, and Self.

Notes on the German Editions:

Known Lecture Dates in the German Volume:

The Hague: 1913-03-20 
The Hague: 1913-03-21 
The Hague: 1913-03-22 
The Hague: 1913-03-23 
The Hague: 1913-03-24 
The Hague: 1913-03-25 
The Hague: 1913-03-26 
The Hague: 1913-03-27 
The Hague: 1913-03-28 
The Hague: 1913-03-29 

Total Lectures in the German volume: 10

English Publishing History:

Title: The Effects of Spiritual Development - 10 lectures The Hague

Complete German volume?: Yes
Publisher: Rudolf Steiner Press
Most Recent Year Published: 1978
Year of original Copyright: 1978
ISBN: 0-85440-320-5
Translator(s): A. H. Parker
Number of Lectures: 10
Number of Pages: 154
Book Type: Paperback

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Online Sources:

If volume 145 of the Complete Works is available online in the RSArchive, it will be here. (If not, you will get the main page listing all the books that the archive currently has online.)

Other online sources: None known.

Google Books has a listing for The Effects of Spiritual Development by Rudolf Steiner, an English translation of the complete German volume.

The information above is believed to be accurate, but may not be complete. Translation of GA title by Daniel Hindes. Assembled by Daniel Hindes with much help.