First edition, first printing of Isaac Asimov's first novel. Signed by Asimov on the title page and inscribed, "To Don Sterling best wishes 13 March 1981." Bound in publisher's original gray cloth lettered in orange on the spine. Very Good+ with lean to binding, light wear at extremities and scattered foxing to cloth. Minor offsetting to ensheets. In a Very Good unclipped dust jacket with fading, moderate wear and small damp stain to foot of spine; toning and tape repairs to verso. Signed first editions are scarce.