Rocks and Minerals - Pocket Guides Author:DK Publishing How can platinum help reduce pollution? What makes rubies red and sapphires blue? Why is graphite used to make pencils? The answers to these questions and many more are packed within the pages of Pockets: Rocks and Minerals.
ISBN-13: 9781564586636 ISBN-10: 1564586634 Publication Date: 3/15/1995 Pages:160 Edition:1st American ed Reading Level: Ages 9-12 Rating: