Crystals (Earth)
by Ian Mercer, G. Cressey
ISBN 13: 9780565091453
Format: Paperback (60 pages) Publisher: The Natural History Museum Published: 01 Jan 1999
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Nature Guide to the West Country (Usborne regional guides)
by Ian Mercer
ISBN 13: 9780860203971
Format: Paperback (128 pages) Publisher: Usborne Pub. Published: 20 Mar 1981
Our Changing Earth (Exploration & discovery)
ISBN 13: 9780333275436
Format: Hardcover (32 pages) Publisher: Heinemann Library Published: May 1980
Crossing's Guide to Dartmoor
by William Crossing,P.G. Stevens,Ian Mercer
ISBN 13: 9781872640167
Format: Paperback (576 pages) Publisher: Peninsula Press Published: 14 Nov 1990