Forces & machines / 
Mary Atwater ... [et al.]. 
 - New York :  Macmillan/McGraw-Hill School Pub. Co.,   ©1995. 
 - 91 pages :  illustrations ;  31 cm. 
 - Macmillan/McGraw-Hill science,   unit 39. .
<br/><br/> Include index.<br/> 
<br/><br/><label>ISBN: </label>0022760873  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Force and energy--Study and teaching (Elementary).
<br/><br/><label>Dewey Class. No.: </label>621.31042 FOR