by Poul Anderson
publisher: Signet publish date: January 17th 1978
format: mass market paperback pages: 176
language: English
ISBN:
0451079000 (9780451079008)
publisher: Baen Books publish date: March 1st 1993
format: mass market paperback pages: 240
language: English
ISBN:
067172164X (9780671721640)
publisher: Sphere. publish date: December 15th 1977
format: paperback pages: 191
language: English
ISBN:
0722111649 (9780722111642)
publisher: Roc publish date: October 5th 1982
format: paperback
language: English
ISBN:
0451118499 (9780451118493)
publisher: Gateway publish date: September 29th 2011
format: kindle pages: 176
language: English
ASIN: B005K8H16S
publisher: Roc publish date: May 1st 1973
format: paperback
language: English
ISBN:
0451054792 (9780451054791)
publisher: Gregg Press publish date: February 1st 1977
format: hardcover pages: 176
language: English
ISBN:
0839823533 (9780839823537)
language: English
ISBN:
0709178433 (9780709178439)