Diagnostic techniques for soils and crops : their value and use in estimating the fertility status of soils and nutritional requirements of crops / prepared by Firman E. Bear ... [ et al. ] ; edited by Hermine Broedel Kitchen. Bear, Firman E. (Firman Edward), 1884-1967. Kitchen, Herminie B. (Herminie Broedel), 1901-1973, editor. Soils Analysis. Soil fertility Soils Testing. Plants Nutrition. Deficiency diseases in plants Agricultural chemistry. S593 .B4 631.4 KID Includes bibliographical references and index. Washington : American Potash Institute, 1948. 1948. 1948 Text xxiii, 308 p. : eng