Morse, Marston <br/><br/>
Critical point theory in global analysis and differential topology: an introduction 

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 - New York  Academic Press  1969 
 - xii,389p.   
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<br/><br/><label>Subjects--Index Terms: </label>Algebraic geometry  Geometry  Algebra co-ordinate geometry  Differential topology 
<br/><br/><label>Dewey Class. No.: </label>513.83