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English
Mwy am y cnydau
Sefydlu’r cnwd
Arddangosiad ar Raddfa
Agweddau ac Ymddygiad
Mesur nwyon tŷ gwydr
Integreiddio systemau
What’s new?
Effeithiau amgylcheddol ehangach
Beth yw’r rhaglen GGRD?
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