publisher: HarperCollins publish date: January 28th 1975
format: hardcover pages: 336
language: English
ISBN:
0061318450 (9780061318450)
publisher: Hutchinson
publish date: January 15th 1981
format: paperback pages: 368
language: English
ISBN:
0091418917 (9780091418915)
language: English
ISBN:
0091168813 (9780091168810)
language: English
ISBN:
0091168805 (9780091168803)