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Soil fertility management for sustainable agriculture.

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Plant -soil interactions at low pH.

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A Manual for the determination of soil physical parameters

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Soil acidity and liming in the humid tropics :Cornell international agriculture Bulletin 30

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Soil acidity

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The problem of maintaining soil fertility in Eastern Kenya:A review of relevant research.

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Arkansas soil fertility studies 2000: Research Series- 463, March 1999

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Arkansas soil fertility studies 2000: Research Series- 480, March 2001

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Arkansas soil fertility studies -1999: Research Series- 471, March 2000

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Arkansas soil fertility studies -1996: Research Series- 455 April -1997

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Management of acid soils in the humid tropics of Asia

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Soil fertility and fertilizers.

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Soil fertility and fertilizers.

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Soil fertility investigation in East Pakistan.

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soil fertility,fertilizer &integrated nutrient management.

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Control research project on role of blue-green algal incoulmn for improving soil fertility and reclaiming salinity of soil.

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Acid Soil and Acid Rain

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Soil,Fertilizer,and Plant Silicon Research in Japan

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Soil Fertility and Fertilizers : An Introduction to Nutrient Management

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The Philippines Recommends for Soil Fertility Management

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