SEDIMENTARY PETROLOGY AN INTRODUCTION
Written by Maurice E. Tucker. Stock no 2124151. Published by Blackwell Scientific Publications. 1987.

THE UPPER PALAEOZOIC AND POST-PALAEOZOIC ROCKS OF WALES
Written by T.R. Owen. Stock no 693240. Published by University of Wales. 1st. 1974.

MORPHOLOGICAL ANALYSIS OF LAND FORMS
Written by Walther Penck & Hella Czech & Katherine Cumming Boswell. Stock no 2111703. Published by Macmillan & Co. Ltd.. 1953.

THE BALA VOLCANIC SERIES OF CAERNARVONSHIRE AND ASSOCIATED ROCKS
Written by Alfred Harker. Stock no 1712726. Published by Cambridge University Press. 1st. 1889.

ON THE ORIGIN OF SPECIES: BY MEANS OF NATURAL SELECTION
Written by Charles Darwin & Richard Keynes. Stock no 1322551. Published by Folio Society..

ON THE ORIGIN OF SPECIES: BY MEANS OF NATURAL SELECTION
Written by Charles Darwin & Richard Keynes. Stock no 1826094. Published by Folio Society. 1st thus. 2006.

ALPINE ENVIRONMENT: GEOLOGY, ECOLOGY AND CONSERVATION
Written by John G. Schmidt. Stock no 1826656. Published by Nova Publishers. Circa. 2011.

NATURAL RESOURCES OF THE UNITED STATES
Written by Jacob Harris Patton. Stock no 987218. Published by D. Appleton And Company. 1st. 1888.

FUNDAMENTALS OF GEOMORPHOLOGY
Written by R.J. Rice. Stock no 611815. Published by Longman. 1978.

THE HISTORIC TAF VALLEYS VOLUME TWO
Written by John Perkins & Jack Evans & Mary E. Gillham. Stock no 813581. Published by Merthyr Tydfil and District Naturalists' Society. 1st. 1982.

THE HISTORIC TAF VALLEYS VOLUME TWO
Written by John Perkins & Jack Evans & Mary E. Gillham. Stock no 1709063. Published by Merthyr Tydfil and District Naturalists' Society. 1st. 1982.

THE WEALD
Written by J.F. Kirkaldy & et al. Stock no 629054. Published by The Geologists' association. 1976.