Dod i adnabod /
Allen, Gwen.
Richards, Roy.
Hywyn, Gwenno,1949-
[Llundain] : SCDC Publications/Cyhoeddiadau PDCY ; [Caernarfon] : Cyngor Sir Gwynedd,
1990.
Arg Saesneg gwreiddiol = Original English ed: Macdonald, 1984
1 llyfr canllawiau; 2 set o 12 cerdyn = 1 book of guidelines; 2 sets of 12 cards
Cyfaddasiad Cymraeg = Welsh adaptation: Gwenno Hywyn
Natural history