Diagnostic techniques for soils and crops : their value and use in estimating the fertility status of soils and nutritional requirements of crops /
Bear, Firman E.(Firman Edward),1884-1967,author.
Kitchen, Herminie B.(Herminie Broedel),1901-1973,editor.
American Potash Institute.
Includes bibliographical references and index.
Soils
Soil fertility.
Soils
Plants
Deficiency diseases in plants.
Agricultural chemistry.
Agricultural chemistry.
Deficiency diseases in plants.
Plants
Soil fertility.
Soils
Soils