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- fertilizer
- Fertilizers 4
- Soil amendments 4
- Agriculture 1
- Borax 1
- Chaux 1
- Composition 1
- Engrais et amendements 1
- Lime 1
- Phosphorus 1
- Research 1
- Soils 1
- White spruce 1
- borax 1
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Summary of phosphorus research in the United States relating to soils and fertilizers.
Published 1950Government Document Book