This is a classic business book with many concepts and ideas about leadership in business.
This book should be read by all those going into management or supervision, but you should not take everything under advisement because there are a multitude of good business books and they may tend to take some ideas to the extreme. You have to find out what works for you and not what works for the author.
Good luck and good reading.
J. Robert Ewbank author "John Wesley, Natural Man, and the 'Isms'"