Why does the ground shake during an earthquake? What machine draws wiggly lines to measure ground movement? How can you stay safe in an earthquake? Read this book to discover the answers!
语言 英语 ● 格式 PDF ● ISBN 9780761340348 ● 出版者 Lerner Publishing Group ● 发布时间 2008 ● 下载 3 时 ● 货币 EUR ● ID 5832842 ● 复制保护 Adobe DRM
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