How Come Planet Earth?: Every Kid's Science Questions Explained by Kathy Wollard
	List Price:   $12.95 Unit Price:   $10.36 You Save:   $2.59 (20%) ISBN-10:   0761112391 ISBN-13:   9780761112396 Publisher:   Workman Publishing Category:   Science Books Pub. Date:   September 1999 Pages:   344 Format:   Trade Paper 2 Ages:   9 to 12 Grades:   4 to 7