Beaver, William C.  <br/><br/>
General biology :   the science of biology /  
William C. Beaver ; George B. Noland. 
 - 8th ed. 
 -  Mosby,   1970. 
 - xiv, 546 p. :  ill. 
<br/><br/><label>Subjects--Index Terms: </label>ბიოლოგია 
<br/><br/><label>Universal Decimal Class. No.: </label>57