Cambridge University Press Cambridge Factbooks 5 Why Do Shadows Change?
Publikace: A series of twenty non-fiction science readers which engages children in the world around them. What is light? What is white light? What is a polar night? You can find the answers to these and other questions about light and shade in Why Do Shadows C - Brasch, Nicolas. Anotace: Zjednodušená četba pro děti ...a dál?