Blinkers and Buzzers About this product Product Information Traffic lights, telegraphs, and burglar alarms are just a few of the exciting battery-powered models that can be built from this involving book. Fifty creative experiments show how and why these devices work while providing hours of hands-on learning fun. A Boston Children's Museum Activity Book. Product Identifiers Publisher HarperCollins ISBN-10 0688099653 ISBN-13 9780688099657 Product ID (ePID) 294478 Product Key Features Format Trade Paperback Publication Year 1991 Language English Dimensions Weight 9.1 Oz Width 7.1in. Height 0.3in. Length 8.9in. Additional Product Features Dewey Edition 20 Grade to Seventh Grade Illustrated Yes Dewey Decimal 537/.078 Grade from Fourth Grade Series Boston Children's Museum Activity Bks. Age Range 9-12, Juvenile Audience Author Bernie Zubrowski Illustrated by Doty, Roy Number of Pages 112 Pages Lc Classification Number Qc527.Z83 1991 Lccn 90-044519