Bulletin of the American Physical Society :  1975 : Series II / 
American physical society (New-York). 
 - New York :   The American Physical Society. 
 - v. 
<br/><br/><label>Subjects--Index Terms: </label>ფიზიკა პერიოდიკა 
<br/><br/><label>Universal Decimal Class. No.: </label>93(05)