Books like Research Methodology
Douglas K. Detterman
Research Methodology is 338 pages, about 6 hours 12 minutes at 250 words a minute.
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Emotional Intelligence 7.0 h 
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Hare Brain, Tortoise Mind 5.0 h The Nature of Human Intelligence 9.9 h 
Make the Most of Your Mind 2.9 h 
Brainstorms 7.0 h Bar height shows length. Estimated at 250 words a minute.