Devon's non metal mines
Subtitle: discovering Devon's slate, culm, whetstone, beer stone, ball clay, and lignite mines
By: Richard A. Edwards
Publisher: Halsgrove
Published: 2011
Place of publication: Wellington
Language: eng
Number of pages: 160
ISBN-13: 9780857041180
Subjects: Mines and mineral resources; History; Geology
Notes: Includes bibliographical references (p. 153-160).