Ramírez-Martínez, J R Some factors influencing the determination of phosphatase activity in native soils and in soils sterilized by irradiation. [electronic resource] - Enzymologia Jul 1966 - 23-38 p. digital Publication Type: Journal Article ISSN: 0013-9424 Subjects--Topical Terms: ElectronsHydrogen-Ion ConcentrationPhosphoric Monoester Hydrolases--analysisRadiation EffectsSeasonsSoil--analysisSoil MicrobiologyWater