International classification system for physics  
The working group in physics of ICSU AB  
 - 2nd ed.  
 - France:   International Council of Scientific Unions Abstracting Board,   1978  
 - 68p.  
<br/><br/><label>ISSN: </label>0305-9618  
<br/><br/><label>Subjects--Topical Terms: </label><br/>International classification system 
<br/><br/><label>Subjects--Index Terms: </label>Library information  Library systems  
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.4:53.001.3=40=30  / L8