Aubrey Strahan Books
The Geology of the Neighbourhoods of Flint, Mold, and Ruthin. (Explanation of Quarter-sheet 79 S.E.)
- 268 pages
- 10 hours of reading
The Geology of the Coasts Adjoining Rhyl, Abergele, and Colwyn, (explanation of Quarter-sheet 79 N. W.)
- 94 pages
- 4 hours of reading