The sand and gravel resources of the country between Hatfield Heath and Great Waltham, Essex description of 1:25000 sheets TL51/61
Marks, R. J.
Institute of Geological Sciences (Great Britain)
London H.M.S.O.
1980
Map on folded sheet in pocket
At head of title: Institute of Geological Sciences
Bibliography: p101
With a folded map in a pocket at the end
Sand
Gravel