by Ken Wilber
publisher: Shambhala publish date: October 16th 2001
format: paperback pages: 189
language: English
ISBN:
1570628556 (9781570628559)
publisher: Shambhala publish date: August 29th 2000
format: hardcover pages: 176
language: English
ISBN:
157062724X (9781570627248)
publisher: Gill & MacMillan publish date: April 26th 2001
format: paperback
language: English
ISBN:
0717131637 (9780717131631)