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Author: J. L. Walsh
Title: The location of critical points of analytic and harmonic functions
Additional book information: (American Mathematical Society Colloquium Publications, vol. 34.) New York, American Mathematical Society, 1950. 8+384 pp. $6.00.
Reviewer: Morris Marden
Journal: Bull. Amer. Math. Soc. 57 (1951), 194-204