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A modified resin exchange method for measurement of available phosphate in soils derived from volcanic ash
(The Williams & Wilkins Co., 1975)
Determination of maximum complexing ability of water-soluble complexants
(The Williams & Wilkins Co., 1972)
Efectos de algas marinas sobre la disponibilidad de fósforo en suelos derivados de cenizas volcánicas.
(Chile, Instituto de Investigaciones Agropecuarias, 1976)
Response to a letter to the editor: Response to McCarthy's comments on the derivation of Schubert's ion-exchange equations.
(The Williams & Wilkins Co., 1978)
Effect of seaweed on phosphorus available of a soil derived from volcanic ash.
(American Society of Agronomy, 1971)