Walsh, J. L. <br/><br/>
The locations of critical points of analytic and harmonic functions   

 - New York  American Mathematical Society  1950 
 - viii, 384p. Bibl. Index 
 - American Mathematical Society Colloquium Publications    v. 34 .
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<br/><br/><label>Dewey Class. No.: </label>515.73  / W225.LC