The story of a young geologist from Welshpool, researched and written as part the Welshpool Geological Heritage Project. (2012)
Joseph Bickerton Morgan a chasgliad ffosilau Powysland
Stori o daearegwr ifanc o'r Trallwng, ymchwiliwyd a ysgrifenedig fel rhan o'r Prosiect Drefatadeth Daeragol y Trallwng. (2012)
Lawrlwytho