Middle school science and technology :  level C, investigating systems and change / 

 - Dubuque, Iowa :  Kendall/Hunt Pub,  c1994. 
 - xv, 468p. : col. ill. ; 26 cm.  illustrations ;    cm. 
<br/><br/> Glossary : p. 441-456. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0840366809 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary and Secondary)<br/>Technology--Study and teaching (Elementary and Secondary)
<br/><br/><label>LC Class. No.: </label>Q161   / In8 1994