Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Convection Effects from Underground Fires: The Backing of Smoke Against the Ventilation (report)
Safety in Mines Research Establishment Report No. 96. 12 pages and appendices, stapled.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.