Lefschetz, Solomons <br/><br/>
Differential equations: Geometric theory 

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 - New York  Dover  1977 
 - x, 390 p.   
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<br/><br/><label>Subjects--Index Terms: </label>Differential equations  advanced Calculus  Calculus  Trignometry  Co-ordinate geometry  Mathematics  Number theory  Set theory  Group theory  Mathematical sciences  Vectors 
<br/><br/><label>Dewey Class. No.: </label>514.763.8