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Soil Fertility Removed in Some Crops.
(Texas Agricultural Extension Service, 19XX)
Soil Fertility Removed in Some Crops.
(Texas Agricultural Extension Service, 19XX)
Pasture Fertilization.
(Texas Agricultural Extension Service, 1951)
Soil Nutrients Removed by Some Crops.
(Texas Agricultural Extension Service, 19XX)
Soil Fertility Removed in Some Crops.
(Texas Agricultural Extension Service, 19XX)
The Use of Soil Tests.
(Texas Agricultural Extension Service, 1948)