Lorbeer, George C. <br/><br/>
Science activities for middle school students / 
George C. Lorbeer 
 - 2nd ed. 
 - Boston :  McGraw-Hill,  c2000 
 - xiv, 428 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0072299169 (acid-free paper) 
<br/><br/><label>LCCN: </label>99-035891 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Middle school)
<br/><br/><label>Subjects--Index Terms: </label>Khoa học tự nhiên Nghiên cứu giảng dạy Phổ thông trung học 
<br/><br/><label>LC Class. No.: </label>Q181  / .L84 2000 
<br/><br/><label>Dewey Class. No.: </label>507  / LOR 2000