52 books • 9 series
Mamaliaid (Ffeithiau Anifeiliaid)
Cyfres Ffeithiau! Planhigion: Planhigion
Cyfres Ffeithiau! Anifeiliaid: Mamaliaid
Birds (Go Facts Animals)
Insects (Go Facts Animals)
Reptiles (Go Facts Animals)
Cyfres Ffeithiau! Planhigion: Blodau
Cyfres Ffeithiau: Planhigion fel Bwyd
Cyfres Ffeithiau! Planhigion: Coed
Food (Go Facts)
Food: from Farms to You (Go Facts)
Cyfres Ffeithiau! Anifeiliaid: Trychfilod
Cyfres Ffeithiau! Anifeiliaid: Adar
Cyfres Ffeithiau! Anifeiliaid: Ymlusgiaid
Food: Healthy Eating (Go Facts)
From Farms to You (Go Facts)
Food: Cooking and Change (Go Facts)
Food: Farms (Go Facts)
Real World Robots (The Real Deal, Green S.)
The Alien Files
Plants That Bite Back (Brain Waves S.)
Reptiles (Go Facts)
Plants (Go Facts)
Plants as Food Booster Pack (Go Facts)
