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  1. An Introduction to Human Problems.Harold Raymond Wayne Benjamin - 1930 - [Boston]Houghton Mifflin Company.
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  2. Man, the Problem-Solver.Harold Raymond Wayne Benjamin - 1930 - Boston: Houghton Mifflin Company.
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  3. Wakan; the Spirit of Harold Benjamin.Harold Raymond Wayne Benjamin - 1968 - Minneapolis, Burgess Pub. Co..
     
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