Creighton, R <br/><br/>
Calculus of several variables 

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 - Boston  Houghton  1971 
 - xiv,329p.   
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<br/><br/><label>Subjects--Index Terms: </label>Differential equqtions  Partial differential equations  Functional equations 
<br/><br/><label>Dewey Class. No.: </label>517.9