Allen, Donald <br/><br/>
Physical science / 
Donald Allen and Richard J. Ordway. 
 - 2nd ed. 
 -  Van Nostrand,  1968. 
 - xii, 872 p. :  ill. 
<br/><br/>Bibliography: p. 813-824. 
<br/><br/><label>Subjects--Index Terms: </label>ფიზიკა 
<br/><br/><label>Universal Decimal Class. No.: </label>53