Elsgolts, L E <br/><br/>
Differential equations / 
by L E Elsgolts 
 - Delhi :  Hindustan publishing corporation,   1961. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations-- Analysis-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.35  ELS-D