The pattern of past industry in the National Park
By: [text by John Van Laun ; illustrations by Michael Blackmore].
Publisher: Brecon Beacons National Park Committee
Published: 1976
Place of publication: Brecon
Language: eng
Number of pages: 20
Subjects: Industrial archaeology -- Wales -- Brecon Beacons National Park.; Brecon Beacons National Park (Wales)
Notes: Bibliography: p. 20.