Darllen mewn dim.
Owen, Anwen.
Welsh Joint Education Committee.
Talybont, Ceredigion : Y Lolfa,
2006.
CD-ROM in pocket attached to inside front cover.
On t.p.: Cyhoeddwyd dan nawdd cynllun cyhoeddiadau Cyd-bwyllgor Addsyg Cymru.
Accompanying disc files in JPG format.
Welsh language
Accompanying disc is available for use on a standalone workstation within the library for single users. Disc will require installation.