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Adrodd fel Amhriodol

Testun Gwreiddiol (Anodiad: EPW026085 / 2030271)

' Gas holder and retorts for production of coal gas '

Dywedwch wrthym pam mae’r cynnwys hwn yn amhriodol *(gofynnol)

Dewis categori *(gofynnol)

Os ‘Arall’ rhowch fanylion (dewisol)

Eich enw (dewisol)

Eich cyfeiriad e-bost (dewisol)

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