Boothroyd, Jennifer How big? how heavy? how dense?: a look at matter written by Jennifer Boothroyd - Minneapolis, USA Lerner publishing group, inc 2011 - 32 pages colour illustrations 27 cm - Lightning bolt books. Exploring physical science . includes glossary, bibliography and index J E ISBN: 9780761360957 Subjects--Topical Terms: Matter, Properties Dewey Class. No.: J 530 BOOT