The sand and gravel resources of the country around Hertford, Hertfordshire
Subtitle: description of 1:25 000 resource sheet TL31
By: P.M. Hopson and M.D.A. Samuel.
Contributors: Samuel, M. D. A.; Institute of Geological Sciences.
Series: Mineral assessment report -- 112
Publisher: H.M.S.O.
Published: 1982
Place of publication: London
Language: eng
Number of pages: 72
Notes: At head of title: Institute of Geological Sciences, Natural Environment Research Council.

Mapin end pocket.