Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
His Majesty's Stationery Office
Diwydiant
Coal Mines, The Firedamp Detectors Order, 1935
Production: His Majesty's Stationery Office
(1935)
83.184I/14
Diwydiant
Electricity Supply Regulations. 1937
Production: His Majesty's Stationery Office
(1937)
83.184I/57
Diwydiant
Electricity Supply Regulations. 1934
Production: His Majesty's Stationery Office
(1934)
83.184I/55
Diwydiant
Coal Mines Act, The Safety Lamps Order, 1920
Production: His Majesty's Stationery Office
(1920)
83.184I/8
Diwydiant
Report of the Electricity Sub-Committee, 1947
Production: His Majesty's Stationery Office
(1947)
83.184I/61 (16)
Diwydiant
Rheolau Parthed Defnyddio Paent Plwm 1927 (notice)
Production: His Majesty's Stationery Office
77.27I/5
Diwydiant
Coal Mines Act, 1911, electricity regulations
Production: His Majesty's Stationery Office
(1924)
83.184I/10
Diwydiant
The Safe Use of Explosives in Coal Mines (booklet)
Production: His Majesty's Stationery Office
(1931)
87.96I/460
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