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Advances in AGRONOMY Vol. 7
Soil Agregation
Recent Changes in Swedish Crop Production
Mineral Nutrition of Plants as Related to Microbial Activities in Soils
Improvement of the Sugar Best in the United States
Green Manuring Viewed by a Pedologist
Plant Introduction as a Federal Service to Agriculture
The Enigma of Soil Nitrogen Balance Sheets
Weed Control in Principal Crops of the Southern United States
Mineralization of Organic Nitrogen in Soil
The Place of Microbiology in Soil Science
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