French, Henry F. (Henry Flagg), 1813-1885. Farm drainage. : The principles, processes, and effects of draining land with stones, wood, plows, and open ditches, and especially with tiles; including tables of rain-fall, evaporation, filtration, excavation, capacity of pipes; cost and number to the acre, of tiles, &c., &c. and more than 100 illustrations. / By Henry F. French.

Farm drainage. : The principles, processes, and effects of draining land with stones, wood, plows, and open ditches, and especially with tiles; including tables of rain-fall, evaporation, filtration, excavation, capacity of pipes; cost and number to the acre, of tiles, &c., &c. and more than 100 illustrations. / By Henry F. French.