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General Fertilizer Recommendations for the Lower Rio Grande Valley.
(Texas Agricultural Extension Service, 1960)
General Fertilizer Recommendations for the Upper Rio Grande and Trans-Pecos.
(Texas Agricultural Extension Service, 1960)
General Fertilizer Recommendations for the High Plains.
(Texas Agricultural Extension Service, 1960)
General Fertilizer Recommendations for the Blackland Prairie, Grand Prairie and Eastern Part of Edwards Plateau.
(Texas Agricultural Extension Service, 1960)
General Fertilizer Recommendations for the Gulf Coast Prairie and Coast Marsh.
(Texas Agricultural Extension Service, 1960)
General Fertilizer Recommendations for the West Cross Timbers, East Cross Timbers, North Central Prairie, and Central Basin.
(Texas Agricultural Extension Service, 1960)
General Fertilizer Recommendations for the Rio Grande Plain.
(Texas Agricultural Extension Service, 1960)