Which early machine revolutionised farming? What led to the invention of the toaster? When was the elevator created? Which inventions changed the way music was heard and recorded? From wheelbarrow to photocopier, and milking machine to electric heater, this book is filled with facts about interesting machines that simplified many everyday, as well as complex tasks.
Machine Inventions that changed the world
Aurthor :Om Books Editorial Team
Publisher :Om Books International