20Yn adran 25(2) (cydlynu arolygiadau etc) hepgorer baragraff (d).
Gwybodaeth Cychwyn
I1Atod. 1 para. 20 ddim mewn grym ar Gymeradwyaeth Frenhinol, gweler a. 53(2)
I2Atod. 1 para. 20 mewn grym ar 1.4.2010 gan O.S. 2009/3272, ergl. 3(1), Atod. 2 (ynghyd ag ergl. 3(2)-(5)) (as diwygio (8.9.2010) gan O.S. 2010/2237, ergl. 2)
I3Atod. 1 para. 9 mewn grym ar 1.4.2010 gan O.S. 2009/3272, ergl. 3(1), Atod. 2 (ynghyd ag ergl. 3(2)-(5)) (as diwygio (8.9.2010) gan O.S. 2010/2237, ergl. 2)