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Standard operating procedures for collecting and handling soil samples in Oklahoma
(Oklahoma State University. Division of Agricultural Sciences and Natural Resources. Cooperative Extension Service, 2003)
Liming acid soils: what you should and should not expect
(Oklahoma State University. Division of Agricultural Sciences and Natural Resources. Cooperative Extension Service, 2003)
Sweatless soil sampler
(Oklahoma State University. Division of Agricultural Sciences and Natural Resources. Cooperative Extension Service, 2003)
Comprehensive nutrient management plan (CNMP)
(Oklahoma State University. Division of Agricultural Sciences and Natural Resources. Cooperative Extension Service, 2003)