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Gellir lawrlwytho cynnwys at ddefnydd anfasnachol, megis defnydd personol neu ar gyfer adnoddau addysgol.
Ar gyfer defnydd masnachol cysyllwch yn uniongyrchol gyda deilydd yr hawlfraint os gwelwch yn dda.
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Disgrifiad

Dinorwig Power Station at the start of construction in 1975

Sylwadau (1)

Anonymous's profile picture
very long civil engineering project , and lot of tunnels to mined ,

Rhaid mewngofnodi i bostio sylw