publisher: HarperCollins publish date: January 28th 1971
format: paperback
language: English
ISBN:
0064632571 (9780064632577)
publisher: Harper Perennial publish date: June 17th 1992
format: paperback pages: 208
language: English
ISBN:
0060922958 (9780060922955)
language: English
ISBN:
0389002305 (9780389002307)