Regional geochemistry of Wales and part of west-central England : stream water /
British Geological Survey.
Keyworth : British Geological Survey,
1999.
Cover title: Regional geochemistry stream water Wales = Geocemeg rhanbarthol dŵr nant Cymru.
Map of Wales and west-central England, solid geology at scale 1:250,000.
Includes bibliographical references.
Geochemistry
Rivers