The Secrets of Fertile Soils: Humus as the Guardian of the Fundamentals of Natural Life

The book provides a comprehensive and highly practical insight into the interdependent relationships between soil, plants, animals and human beings.

Sustainable Land Management for the Oxisols of the Latin American Savannas: Dynamics of Soil Organic Matter and Indicators of Soil...
By Richard James Thomas, Miguel A. Ayarza
The book describes studies of the dynamics of soil organic matter and physical processes in different agricultural systems currently operating in the savannas of Latin America, principally the Brazilian Cerrados.
Building Soils for Better Crops: Sustainable Soil Management
By Fred Magdoff, Harold Van Es
"'Published by the Sustainable Agriculture Research and Education (SARE) program, with funding from the National Institute of Food and Agriculture, U.S. Department of Agriculture."
Secrets of Fertile Soils: Humus as the Guardian of the Fundamentals of Natural Life
By Erhard Hennig
Translation of: Geheimnisse der fruchtbaren Beoden.