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Why Does Electricity Flow? Level 6 Factbook
pocket,
2010,
Engelska,
ISBN 9780521137485
A series of twenty non-fiction science readers which engages children in the world around them. What is electricity? What is static electricity? Why do batteries go flat? …
Why Does It Fly? Level 6 Factbook
pocket,
2010,
Engelska,
ISBN 9780521137478
A series of twenty non-fiction science readers which engages children in the world around them. What makes flight possible? Why can a bumblebee fly? How does a jet engine work? …