Subject
2 free books about drainage, free to read online. Chapter 1 of any book is free, no account needed.
Farm drainage The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles
Henry F. French
This work is a practical treatise on farm drainage, written by Henry Flagg French in 1859 for American…
Draining for Profit, and Draining for Health
George E. Waring