Capel Curig and Betws-y-Coed : description of 1:25 000 sheet SH75 /
Howells, M. F.(Malcolm Fletcher)
London : H.M.S.O.,
1978.
Sheet ([1]p.), book (ii-viii,75p.) and fold. map in plastic wallet. - Also available without maps
Bibliography: p.59-62. - Includes index
ISBN 0-11-880783-8 Without maps : £2.00
Geology