Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Coke-Oven and By-Product Works Chemistry (book)
Brown hardback cover with the title stamped in gold on the spine. With 62 illustrations and 7 folding graphs.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.