The Geology of the South Wales Coalfield Part IV - The Country around Pontypridd and Maesteg (Explanation of One-inch geological Sheet 248)
Evans, W.B.
The Geology of the South Wales Coalfield Part IV - The Country around Pontypridd and Maesteg (Explanation of One-inch geological Sheet 248) - 1 - 391
The Geology of the South Wales Coalfield Part IV - The Country around Pontypridd and Maesteg (Explanation of One-inch geological Sheet 248) - 1 - 391