Books Pipe and Excavation Contracting
Books and Publications Average Rating:

Rating: - Excellent
Not too hard to comprehend. This was suggested reading for the Louisiana General Contractors License Exam. I found it informative.

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Rating: - From the ground-up
This book is heavy. The lightest, easiest reading is in the index - from there on it's strictly business and takes you through the very bowels of the whole business.
You could literally start, run and retire from the business with this book as a guide. It is very in-depth.