Lefschetz, Solomon,  1884-1972. <br/><br/>
Contributions to the theory of nonlinear oscillations / 
[by] S.P. Diliberto [and others]. 
 - Princeton :  Princeton University Press,  1956. 
 - v.   ill.;  23 cm. 
 - Annals of mathematics studies,  20, 29, 36, 41, 45 .
 -  no. 20, etc. Annals of mathematics studies ; .
<br/><br/> Vol. 5 edited by L. Cesari, J. LaSalle, and S. Lefschetz. 
<br/><br/>Includes bibliographies. 
<br/><br/>Vol.1-- 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oscillations.
<br/><br/><label>Dewey Class. No.: </label>531.32  / CON 1956