French, H. F. (1859). Farm drainage: The principles, processes, and effects of draining land with stones, wood, plows, and open ditches, and especially with tiles. A. O. Moore.
Dyfyniad Arddull ChicagoFrench, Henry F. Farm Drainage: The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles. New York: A. O. Moore, 1859.
Dyfyniad MLAFrench, Henry F. Farm Drainage: The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles. A. O. Moore, 1859.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.