Byrd, Eldon A. <br/><br/>
How things work: practical guide for teaching scientific and technical principles 
[by] Eldon A. Byrd. 
 - West Nyack, N.Y.  Parker Pub. Co.  [1973] 
 - 231 p.  illus.  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0134356446 
<br/><br/><label>LCCN: </label>73004215  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching.<br/>Science--Methodology.<br/>Technology--Study and teaching.
<br/><br/><label>LC Class. No.: </label>Q181  / .B99 
<br/><br/><label>Dewey Class. No.: </label>500