Exploring caves

详细信息   推荐本文 |

• 主题词：Caves
• 责任者：Longsworth ; Polly
• 责任方式：Written
• 出版者：Crowell
• 出版年：1900
• 出版地：New York
• 出版日期：1900/1/1 0:00:00
• 分类号：222
• 语言：English

摘要

If you like to go adventuring in caves, you are a spelunker. If you investigate a cave for scientific purposes, you are a speleologist. But if you know abso-lutely nothing at all about exploring or adventuring in caves, you can learn many facts from this enormously inter-esting book.