http://www.legislation.gov.uk/anaw/2017/3/schedule/4/paragraph/1/welshDeddf Treth Gwarediadau Tirlenwi (Cymru) 2017cyStatute Law Database2023-04-26Expert Participation2022-09-09ATODLEN 4MÂN DDIWYGIADAU A DIWYGIADAU CANLYNIADOL I DDEDDF CASGLU A RHEOLI TRETHI (CYMRU) 2016I1I21Mae DCRhT wedi ei diwygio fel a ganlyn.