Principles and practice of agricultural analysis. Volume 2 (of 3), FertilizersNote 61 — PART FIRST. PRELIMINARY TREATMENT AND PHOSPHATES. (continued 2)Reading editionDie Landwirtschaftlichen Versuchs-Stationen, Band 41, S. 329.◇Copy noteReturn to PART FIRST. PRELIMINARY TREATMENT AND PHOSPHATES. (continued 2)