电子书

Saps, Blackjacks and Slungshots: A History of Forgotten Weapons discovers and preserves the story of the most forgotten weapons from history for the first time in history. These unique fighting tools …

History of Europe describes the history of humans inhabiting the European continent since it was first populated in prehistoric times to present, with the first human settlement between 45, 000 and 2 …

A tracheostomy is a surgically created opening in the neck leading directly to the trachea (the breathing tube). It ismaintained open with a hollow tube called a tracheostomy tube. A tracheostomy is …

This book "The Text Book of Electronics" is written on the basis of syllabus of BSc Vth sem students of 10+2+3 system of Guru Nanak Dev University Amritsar. It also meets the requirements o …

This Spanish book teaches students about the causes of wildfires, how firefighters put them out, the differences between different types of fire, how to prevent wildfires, and the aftereffects of wil …

Yellowstone National Park is filled with many beautiful sights. But, it is also a bizarre and dangerous place! Underground heat melts roads. The ground shakes with earthquakes. Small, bubbling pools …

This fun and informative STEAM book about sharks makes it easy for parents and teachers to introduce STEAM to their youngest learners. Created in collaboration with Smithsonian, this Spanish book use …

NASA wants to send humans to Mars within the next 25 years, but before that can happen, they must plan and prepare. This Spanish Interactiv-e Book will engage students as they read about STEM topics, …

California’s government has a lot in common with the federal government. Both have a Constitution and three branches. Learn how these three levels of government-local, state, and federal-work togethe …

"Don’t Necessarily" Trust Me, I’m a Doctor is a healthcare consumer’s guide to forging partnerships with trustworthy healthcare providers and avoiding the potentially life-threatening dange …