Book dossier
by Jay A. Bonsteel
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Soils of the eastern United States and their use--
Jay Allan Bonsteel
The life of George Washington
Aaron Bancroft
Soil and Environmental Analysis
Keith A. Smith
Soil conditions and plant growth
Edward J. Russell
Elements of agricultural chemistry
Sir Humphry Davy
The nature and properties of soils
Nyle C. Brady
Manual of soil laboratory testing
K. H. Head
Biochar for Environmental Management
Johannes Lehmann
The formation of vegetable mould, through the action of worms
Charles Darwin
