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1. Snap bean production and soil microbial biomass in function of phosphorus dosages (id:IND23299745)

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2. Sewage sludge and EM-4 on the snap bean crop yield (id:IND23284213)

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3. Soil-depleting, soil-conserving, and soil-building crops (id:33478)

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4. Conserving corn belt soil (id:ORC00000518)

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5. Base exchange and related properties of the colloids of soils from the erosion experiment stations (id:CAT86200455)

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6. Base exchange and related properties of the colloids of soils from the erosion experiment stations (id:ORC00000009)

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7. Character and behavior of organic soil colloids (id:CAT86200371)

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8. Character and behavior of organic soil colloids (id:ORC00000008)

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9. Dry farming for better wheat yields : the Columbia and Snake River basins (id:ORC00000281)

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10. The control of blowing soils (id:ORC00000154)

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11. Experiment Station work, V : humus in soils, winter protection of peach trees, swamp, marsh, or muck soils, rape, subwatering in greenhouses, velvet bean, bacterial diseases of plants, sunflowers, grape juice and sweet cider (id:ORC00000026)

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12. Management of soils to conserve moisture : with special reference to semiarid conditions (id:ORC00000089)

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13. Renovation of worn-out soils (id:ORC00000079)

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14. Experiment station work, XIX : maintenance of soil fertility, condimental and medicinal cattle and poultry foods, Thomas slag, rotation of crops, feeding rice meal to pigs, gardening under glass, dressing and packing poultry, winter irrigation of orchards, the curing of cheese, improvement of American grapes, an improved cow stall (id:ORC00000043)

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15. Humus in its relation to soil fertility (id:IND23311203)