The sand and gravel resources of the country east and south-east of Darlington, Durham : description of 1:25,000 sheet NZ 30 and 31

Gozzard, J.R.; Price, D.

NORA

The sand and gravel resources of the country east and south-east of Darlington, Durham : description of 1:25,000 sheet NZ 30 and 31

Gozzard, J.R.; Price, D.. 1982 The sand and gravel resources of the country east and south-east of Darlington, Durham : description of 1:25,000 sheet NZ 30 and 31. London, UK, British Geological Survey, 89pp. (Mineral Assessment Report 111) (Unpublished)