Sund, Robert B. <br/><br/>
Accent on science / 
authors, Robert B. Sund, Donald K. Adams, Jay K. Hackett. 
 - Columbus, Ohio :   C.E. Merrill,   1980. 
 - 251 p. :  ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0675076439 
<br/><br/><label>Subjects--Index Terms: </label>მეცნიერება 
<br/><br/><label>Universal Decimal Class. No.: </label>001