Popeth mae angen ei wybod am y ffliw : dros 65 oed - neu'r iechyd yn fregus? : gall y ffliw fod yn beryglus. Mynnwch frechiad = All you need to know about flu : if you are over 65 or at risk, flu can . ISBN 0750424753. Published by Cynulliad Cenedlaethol Cymru in 2000. Publication and catalogue information, links to buy online and reader comments.