Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Change to Metric Pipes, Pipe Flanges and Flanged Valves for General Use (booklet)
National Coal Board Mining Department
(printer)
Trafford Print
(printer)
43 page booklet in red and white covers, stapled at centre. Notes of guidance for colliery engineers.
Pwnc
Diwydiant
Rhif yr Eitem
2001.1/826
Creu/Cynhyrchu
Derbyniad
donation, 1/2/2001
Mesuriadau
Meithder
(mm): 210
Lled
(mm): 148
Deunydd
cerdyn
papur
metel
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.