Ripley, Catherine, 1957-

Why? : the best ever question and answer book about nature, science and the world around you / by Catherine Ripley ; illustrated by Scot Ritchie. - 10th anniversary ed. - Toronto : Owlkids, c2010. - 191 p. : col. ill. ; 26 cm.

Includes index.

ISBN: 9781926818009 : $19.95

Nat. Bib. Agency Control No.: 20109005562

Subjects--Topical Terms:
Science--Miscellanea.
Sciences--Miscellanees.

Dewey Class. No.: j500