Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
British Iron & Steel Federation, questionnaire
Typed in black ink on cream paper. Twelve pages stapled together. Questionnaire on stove practice circulated by the British Iron & Steel Federation Technical Department.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.