Proceedings of the fourth conference on nonlinear oscillations  
/Academia, held in Prague on September 5th-9th, 1967  
 - Prague:   Academia,   1968  
 - 609p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nonlinear oscillations 
<br/><br/><label>Subjects--Index Terms: </label>Mechanical systems  
<br/><br/><label>Universal Decimal Class. No.: </label>534.01(05)  / K8