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Zinc Deficiency and Fertilization.
(Texas Agricultural Extension Service, 1980)
Field and Forage Crop Fertilization in the Lower Rio Grande Valley.
(Texas Agricultural Extension Service, 1978)
Identifying and Correcting Iron Deficiency in Field Crops.
(Texas Agricultural Extension Service, 1982)
Field and Forage Crop Fertilization in the Lower Rio Grande Valley.
(Texas Agricultural Extension Service, 1976)
Soil, Water and Forage Analysis Laboratory Services.
(Texas Agricultural Extension Service, 1980)