Bogoliubov N N <br/><br/>
Asymptotic methods in the theory of non-linear osc 

 - Russian.Ed2  Hindustan Publishing           1961 
 - vi, 537p  cm. 
 - International monographs on Advanced Mathematics and Physics .
<br/><br/> Bibliography P535-37 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>BObD, K1