BIRTHSTONES. [Calgary, Alberta, Canada]: Robert J. Sawyer Books [Published by Red Deer Press, A Fitzhenry & Whiteside Company], . Octavo, pictorial wrappers. First edition. A presentation copy with signed inscription by Gotlieb to David G. Hartwell, "with respects and good wishes." On a dark and moonless planet, the mutant natives must resist aliens come to plunder the planet's resources to save their civilization. Afterword by Nalo Hopkinson. Trade paperback format. A fine copy. (#163818).
First printing has code "5 4 3 2 1" on copyright page.