St. Andre, Ralph E.  1993 <br/><br/>
Simple machines made simple / 
Ralph E. St. Andre. 
 - Englewood, Colo. :  Teacher Ideas Press,  1993. 
 - xix, 150 p; :  ill. ;  28 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>1563081040 :  $20.00 9781563081040 
<br/><br/><label>LCCN: </label>93023388  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Simple machines.
<br/><br/><label>LC Class. No.: </label>TJ147  / .St2 1993 
<br/><br/><label>Dewey Class. No.: </label>621.8/11