The sand and gravel resources of the country west of Chelmsford, Essex - Description of 1:25 000 resource sheet TL 60
Hopson, P.M.
The sand and gravel resources of the country west of Chelmsford, Essex - Description of 1:25 000 resource sheet TL 60 - 1 - 56
The sand and gravel resources of the country west of Chelmsford, Essex - Description of 1:25 000 resource sheet TL 60 - 1 - 56