format: paperback
language: English
ISBN:
087159207X (9780871592071)
publisher: Unity Press publish date: 1984
format: hardcover pages: 190
language: English
ISBN:
0871591804 (9780871591807)
publisher: Unity publish date: September 15th 2004
format: paperback pages: 191
language: English
ISBN:
0871592975 (9780871592972)