The Eternal Trail: A Tracker Looks at Evolution
by Martin G. Lockley
ISBN 13: 9780738203621
Format: Paperback (352 pages) Publisher: Perseus Books Published: 31 Aug 2000
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Dinosaur Tracks and Traces
by
ISBN 13: 9780521407885
Format: Paperback (476 pages) Publisher: Cambridge University Press Published: 22 Feb 1991