Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Powell Duffryn Steam Coal Company Limited (booklet)
''Penallta' Washed Mixture Its Production Its Preparation Its Performance''. 13 pages in blue covers, stapled. Undated.
Pwnc
Diwydiant
Rhif yr Eitem
2018.51/90
Creu/Cynhyrchu
William Lewis (Printers) Ltd.
Dyddiad: 20th century
Derbyniad
Old stock, 14/2/2018
Mesuriadau
Meithder
(mm): 242
Lled
(mm): 186
Deunydd
papur
cerdyn
metel
Lleoliad
In store
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