Author:

Publisher:

Published: 1991

Total Pages: 132

ISBN-13: 9780716627913

Science encyclopedias at elementary reading level covering such topics as space technology, computers, light and electricity, magnetic power, atoms and molecules, gases, the planet Earth, water, the living world, plants, animals with backbones, animals without backbones, the human body, communication, energy, conservation, construction, and machines. It, also, contains a student guide and index.