Principles and practice of agricultural analysis. Volume 2 (of 3), FertilizersNote 52 — PART FIRST. PRELIMINARY TREATMENT AND PHOSPHATES. (continued 2)Reading editionDie Agricultur-Chemische Versuchs-Station, Halle a/S., Ss. 56, et seq.◇Copy noteReturn to PART FIRST. PRELIMINARY TREATMENT AND PHOSPHATES. (continued 2)