Books like Secrets of Consulting
Gerald M. Weinberg
Secrets of Consulting is 228 pages, about 4 hours 11 minutes at 250 words a minute.
6 books to read next
How long each takes
The McKinsey Way 3.4 h 
Case in Point 11 4.5 h 
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Flawless Consulting 5.4 h 
Inside the Minds 4.4 h 
Million Dollar Consulting 5.4 h Bar height shows length. Estimated at 250 words a minute.