Studies in nonlinear vibration theory/ 
Howard J. Eckweiler ... [and others]. 
 - New York:  1946. 
 - 193 p.:  diagrs.,  27 cm. 
<br/><br/> Cover title.  Published by the institute under its earlier name: Institute for Mathematics and Mechanics, New York University. 
<br/><br/><label>LCCN: </label>a  49001168 //R 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.
<br/><br/><label>Dewey Class. No.: </label>531.32   / S933