Global Soil Biodiversity Atlas
This fully illustrated publication details what we presently know about life the soil and the complex ecosystem within which life is sustained. Of course, and here is the rub, when the soil is described as being a very complex living ecosystem, the information flies in the face of Industrial Agriculture. Modern farmers, with the help of their agents, have all but declared war on soil life by the use of petrochemical fertilizers and pesticides.
The Formation of Vegetable Mould through the action of worms with observations of their habits
Understanding the common earthworm's importance is essential to a full understanding of soil fertility and plant health. Contains an interesting introduction by Sir Albert Howard.
Friend Earthworm: Practical Application of a Lifetime Study of Habits of the Most Important Animal in the World
All about the earthworm. A classic of organic literature.