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Paperback, a good reading copy. Your book will be securely packed and promptly dispatched from our UK warehouse. 
1965. Panther. Paperback Good, spine ends, edges & corners rubbed, covers marked. 
(188 pages) a complex tale of time travel and time paradoxes, considered by some critics to be asimov's finest work. (Paperback) 
2000. HarperCollins. Paperback Good, spine ends rubbed, back cover marked. 
Former Library book. Shows some signs of wear, and may have some markings on the inside. Shipped to over one million happy customers. Your purchase benefits world literacy! 
Former Library book. Shows definite wear, and perhaps considerable marking on inside. Shipped to over one million happy customers. Your purchase benefits world literacy! 
Only lightly used. Book has minimal wear to cover and binding. A few pages may have small creases and minimal underlining. Book selection as BIG as Texas. 
Millions of satisfied customers and climbing. Thriftbooks is the name you can trust, guaranteed. Spend Less. Read More. 
With pride from Motor City. All books guaranteed. Best Service, Best Prices. 
Help save a tree. Buy all your used books from Green Earth Books. Read. Recycle and Reuse! 
A wonderful copy with some minor edgewear to the cover. -, Mass Market PaperBack, Very Good / 
Used paperback in good condition. May show some signs of use or wear. 
Mass Market Paperback: Signet: S1493: 1st thus 02/1958: Reading Copy or Better (a more complete description will be provided upon request): Cover Artist: Powers. 