Nicolas Brasch: Why Do Shadows Change?
Скачать книгу (размер 116 Kb , формат fb2, страниц 24) Аннотация: 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 Change?