publisher: Harvard University Press publish date: May 25th 1978
format: hardcover pages: 256
language: English
ISBN:
0674817613 (9780674817616)
publisher: Duke University Press publish date: January 1st 2001
format: ebook pages: 327
ISBN:
1282903950 (9781282903951)
publisher: Findhorn Press
publish date: January 1st 2010
format: ebook pages: 209
ISBN:
1306098351 (9781306098359)