Colorado Parks & Wildlife Research Library

Motor trucks first proved their usefulness for transporting goods during World War I. Since then, advances in technology have led to the design of different types of trucks able to carry out a vast range of tasks, from transportation and waste clearance to firefighting and high-speed racing.

Follows the construction and life of a typical castle through time.

With each page moving forward through time this book examines the causes and results of an earthquake and describes what people have learned about them since 1000 B.C.

Kids will be able to find out all about a dinosaur's life. Using thumb indexes, they can zoom through time--minutes, days, years, or sometimes even centuries--from one page to the next.