Deauna, Melecio C.-- <br/><br/>Exploring the natural world series:  The world of physics/ Deauna, Melecio C.--  -- Philippines:  Sibs Publishing House Inc.  c2001 <br/>xv, 464 p.:  ill.;  26 cm. <br/><br/> includes bibliographical references and indexes. <br/><br/><label>ISBN: </label>9717913234 <br/><br/><label>Dewey Class. No.: </label>Elem 530 D349 2001