Gwenwyn llygod mawr : y bygythiad i'r barcud a bywyd gwyllt arall = Rat poison : the threat to red kites and other wildlife.
Welsh Kite Trust.
Llandrindod : Ymddiriedolaeth Barcudiaid Cymru,
[2005?]
Teitl clawr = Cover title.
Red kite
Rat baits and repellents
Pesticides and wildlife