The Sand and Gravel Resources of the Country Around Welwyn Garden City, Hertfordshire: Description 0f 1:25 000 Resources Sheet TL 11 and TL 21 (Mineral Assessment Reports)

Description

by: J.R. Gozzard · Geological Sciences Inst.

Paperback

ISBN: 978-0-11-884169-6

ISBN-10: 0-11-884169-6

British Geological Survey · 1981