Soils in Clwyd = Priddoedd yng Nghlwyd
Lea, John Winston.
Thompson, T. R. E.
Harpenden Soil Survey of Great Britain (England and Wales),
1978
Book (viii,137p.,leaf of plate,[2]p. of plates) and fold. sheet (col. map) in plastic envelope
Also available without map. - English text, Welsh summary
Bibliography: p.122-124. - Includes index
Soils