Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Diagram
Admiralty
(publisher)
Full title - Diagram to Facilitate the Plotting of Dead Reckoning Position Lines and Other Navigational Problems. Black print on white paper.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.