publisher: HarperCollins publish date: February 1st 1979
format: paperback
language: English
ISBN:
0060906537 (9780060906535)
publisher: Friends of Earth International
format: hardcover pages: 231
language: English
ISBN:
0884106144 (9780884106142)
language: English
ISBN:
0140220291 (9780140220292)
language: English
ISBN:
0884106152 (9780884106159)