James, D., Weaver, W., Reeder, R. Soil test index of plant-available potassium and the effects of cropping and fertilization in Central Washington irrigated soils. Washington: Washington State Univ. College of Agriculture, 1968 12 p. : ill.
James, D., Weaver, W., Reeder, R. Soil test index of plant-available potassium and the effects of cropping and fertilization in Central Washington irrigated soils. Washington: Washington State Univ. College of Agriculture, 1968 12 p. : ill.
James, D., Weaver, W., Reeder, R. (1968) Soil test index of plant-available potassium and the effects of cropping and fertilization in Central Washington irrigated soils, Washington: Washington State Univ. College of Agriculture 12 p. : ill.
James, D., Weaver, W., & Reeder, R. (1968). Soil test index of plant-available potassium and the effects of cropping and fertilization in Central Washington irrigated soils. Washington: Washington State Univ. College of Agriculture, 12 p. : ill.
James D, Weaver W, Reeder R. Soil test index of plant-available potassium and the effects of cropping and fertilization in Central Washington irrigated soils. Washington: Washington State Univ. College of Agriculture; 1968. p. 12 p. : ill.
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