The old gunpowder factory at Glynneath /
Pritchard, Tom.
Evans, Jack.
Johnson, Sydney.
Merthyr Tydfil and District Naturalists' Society.
[Merthyr Tydfil] : Merthyr Tydfil & District Naturalists' Society,
1985
On t.p.: Reprinted in 1998 to celebrate the 21st anniversary of the Merthyr Tydfil & District Naturalists' Society.
Originally published: 1985.
Gunpowder industry
Powder mills