Reference

Arcturus (9781788286107)
Arcturus (9781784288150)
Arcturus (9781789503623)
Spectrum (9781483808697 / CD-704561)
National Geographic Kids (9781426338243)
National Geographic Kids (9781426338212)
Schiffer Publishing (9780764341861)
Avon Books (9780060890063)
Berkley Books (9780425091722) | Tom Brown's
Eyewitness Books (9780394922522)
Addison Wesley Longman Publishing Co (9780201409642)
National Geographic Kids (9781426325434) | Science Encyclopedia
DK Publishing (Dorling Kindersley) (9781465414571)
Portico (9781907554278)
Portico (9781861056252)
Quadrille Publishing (9781787130340)
Charlesbridge Publishing (9781580898102)
National Geographic Kids (9781426327674) | Animal Ark
Barcharts (9781423224310)
HELM (9781408105351)
Scholastic Inc. (9781338053180) | Fly Guy

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