Did you know that the Rocky Mountains range is more than 3, 000 miles long? It stretches all the way from Canada in the north to New Mexico in the south. Some people call them the "Backbone of North America." But how were they formed? What caused their peaks to rise so high? Read this book to find out!
语言 英语 ● 格式 PDF ● ISBN 9780761359623 ● 出版者 Lerner Publishing Group ● 发布时间 2010 ● 下载 3 时 ● 货币 EUR ● ID 5833012 ● 复制保护 Adobe DRM
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