首页 / 官方藏书 / Farm drainage / The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles / CHAPTER XIV DRAINAGE ADAPTS THE SOIL TO GERMINATION AND VEGETATION.

CHAPTER XIV DRAINAGE ADAPTS THE SOIL TO GERMINATION AND VEGETATION.

Farm drainage / The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles · Henry F. French · 第 11 / 17 章