Cambridge University Press Cambridge Factbooks 5 Why Is It So Loud?
Publikace: A series of twenty non-fiction science readers which engages children in the world around them. Why do I hear thunder after I've seen lightning? What is sound? How do our ears hear sound? You can find the answers to these and other questions about so - Brasch, Nicolas. Anotace: Zjednodušená četba pro děti ...a dál?