Factoring Humanity > Editions
by Robert J. Sawyer First published 1998
Published May 15th 1999
by Tor Science Fiction
Mass Market Paperback, 352 pages
Published November 21st 2003
by Orb Books
Paperback, 336 pages
Published July 28th 1998
by Tor Books
Hardcover, 352 pages
Published September 2000
by La factorÃa de ideas
Paperback, 360 pages





