John, F <br/><br/>
Partial differential equations 

 - 2nd ed. 
 - New York  Springer-Verlag  1975 
 - x,250p.   
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<br/><br/><label>Subjects--Index Terms: </label>Linear equations  Boundary problems  Differential equations  Binominal equations  Partial differential equations 
<br/><br/><label>Dewey Class. No.: </label>517.944