publisher: Scribner, 184 pages, Paperback" /> publish date: January 1st 1971
format: paperback pages: 184
language: English
ISBN:
068412338X (9780684123387)
publisher: DAW publish date: June 19th 1973
format: mass market paperback
language: English
ISBN:
087997060X (9780879970604)
publisher: Sidgwick and Jackson publish date: March 23rd 1972
pages: 184
language: English
ISBN:
0283978228 (9780283978227)