TY - BOOK ID - 149881729 TI - Tunnels PY - 2020 SN - 197850392X PB - New York, New York : Enslow Publishing, DB - UniCat KW - Tunnels KW - Tunnels. UR - https://www.unicat.be/uniCat?func=search&query=sysid:149881729 AB - "Today's tunnels, which extend through mountains and underneath oceans and rivers, are marvels of engineering. In this engaging title, readers take a close-up look at these structures and how they are built and maintained. Each chapter will focus on a key area, including the earliest tunnels, the technological advances that have improved their design and construction over time, profiles of tunnel-related careers, and examples of the most impressive tunnels in the world. This book's contents correlate with Next Generation Science Standards, ensuring that young readers will be left with a deeper appreciation and respect for tunnels and the workers that create and maintain them."--Provided by publisher. ER -