Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Comparison of Rubio & Oxfordshire ore, notes
Handwritten in black ink on cream, lined paper. Notes comparing Rubio and Oxfordshire ore (calcined).
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.