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The Formation of Vegetable Mould Through the Action of Worms; With Observations of Their Habits
The Formation of Vegetable Mould Through the Action of Worms With Observations of Their Habits Author:Charles Darwin General Books publication date: 2009 Original publication date: 1904 Original Publisher: John Murray Subjects: Humus Soils Earthworms Worms Soil formation Oligochaeta Nature / Insects