Focus biology :   an annual editions reader. 

 - Guilford, Connecticut :   Dushkin Publishing Group,   1975. 
 - 206 p. :   ill. 
<br/><br/>Bibliography: p. 206. 
<br/><br/><label>Subjects--Index Terms: </label>ბიოლოგია 
<br/><br/><label>Universal Decimal Class. No.: </label>57