Mineralisation in the middle devonian volcanic belt and associated rocks of South Devon /
Leake, R. C.
Norton, G. E.
British Geological Survey.
Great Britain.Department of Trade and Industry.
Keyworth : British Geological Survey,
1993.
Report prepared for the Department of Trade and Industry
Includes bibliographical references.
Minerals
Geology
Rocks, Igneous
Geology, Stratigraphic