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- [1] DETERMINATION OF PLANT-AVAILABLE MANGANESE IN FINNISH SOILS - REPORT - DETERMINATION OF PLANT-AVAILABLE SOIL MANGANESE JOURNAL OF THE SCIENTIFIC AGRICULTURAL SOCIETY OF FINLAND, 1981, 53 (07): : 397 - 508
- [5] DEVELOPMENT OF A QUICK METHOD FOR DETERMINING PLANT-AVAILABLE MAGNESIUM IN ARABLE SOILS ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 1989, 33 (01): : 21 - 26
- [7] DEVELOPMENT OF A QUICK METHOD FOR DETERMINING PLANT-AVAILABLE COPPER IN ARABLE SOILS ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 1989, 33 (01): : 27 - 32