Rhoddodd William Smith o Loughborough i'r teitl yma ac ysgrifennodd:
"This is a geological 'memoir' that describes the geology shown on Geological Survey 1:50,0000 scale maps 95 & 107.
It is quite a technical book, but does provide a pretty complete decription of the district, though it is necessary to use other reference books to get a complete understanding of some of the terms used. It's not suitable for novices, but keen amateurs should find it an invaluable guide.
Geological maps and memoirs for other areas are also published by the British Geological Survey (bgs.ac.uk), situated in Nottingham."
Rhagor o Deitlau
Fe wnaeth pobl wrth brynu'r teitl hwn hefyd brynu'r canlynol: