Sand and gravel extraction first (interim) report of the Kent and East Sussex Sand and Gravel Working Party and report of the Northern London Gravel Working Party /
Standing Conference on London and South East Regional PlanningKent and East Sussex Sand and Gravel Working Party.
Standing Conference on London and South East Regional PlanningNorthern London Gravel Working Party.
London Standing Conference on London and South East Regional Planning
1973
Sand and gravel industry