Logo

Machines at Work by Mary Elting

Large book cover: Machines at Work

Machines at Work
by

Publisher: Harvey House
ISBN/ASIN: B0006AY0EG
Number of pages: 100

Description:
People have always been able to work and build wonderful things, using just their muscles. And they can do a very great deal more when they use their brains, too. They can invent machines to make work thousands of times easier and faster.

Home page url

Download or read it online for free here:
Download link
(multiple formats)

Similar books

Book cover: Beyond the Solar SystemBeyond the Solar System
by - Row, Peterson and company
Studying the distant suns is a great strain on the imagination. If you are to get a true picture of the stars, you will have to imagine temperatures so high that the temperature in the center of a furnace fire would be cool beside them.
(2316 views)
Book cover: The Animal World, A Book of Natural HistoryThe Animal World, A Book of Natural History
by - The University Society
This volume is a sketch of the animal life of the whole world. The author has so skilfully selected his examples to illustrate both the natural groups and the faunas, that his work forms a most commendable plan for the study of natural history.
(5957 views)
Book cover: Giants of Land, Sea and Air, Past and PresentGiants of Land, Sea and Air, Past and Present
by - Random House
A superbly illustrated book of the biggest animals, both living and extinct, that have inhabited the world. The animals are drawn to scale, as are the humans included in each picture to show proportion. This makes any number of comparisons possible.
(7447 views)
Book cover: Big CatsBig Cats
- Wikibooks
A free children's book from the Wikibooks community. Wild cats are some of Earth's grandest treasures, and their stories excite the imagination of kids of all ages. Wikijunior Big Cats helps to explore this fascinating family.
(10697 views)