The Sand and Gravel Resources of the Country North of Wrexham, Clwyd: Description of 1:25 000 Resource Sheet SJ 35 and Part of SJ 25 (Mineral Assessment Reports)

by: P.N. Dunkley · Geological Sciences Inst. Paperback details (UK). ISBN: 978-0-11-884148-1 ISBN-10: 0-11-884148-3 British Geological Survey · 1981