Concussion is dangerous: Welsh Government guidance on concussion for school and community sport up to age 19, file type: PDF, file size: 802 KB
Mae cyfergyd (concussion) yn beryglus: Canllawiau Llywodraeth Cymru ar gyfergywn chwaraeon ysgol a chwaraeon cymunedol hyd at 19 oed, math o ffeil: PDF, maint ffeil: 802 KB