Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Report on the Eichenberg process (extract)
Three pages attached with a paperclip. Typed in black ink on cream paper. Extract from a report by Dr. Ing Bansen of Krupps, Rheinhansen re. the Eichenberg process (process concerning water & gas sprays used in furnaces).
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.