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- [3] REPORT ON PHOSPHORIC ACID IN FERTILIZERS - COMPARISON OF NEUTRAL AMMONIUM CITRATE AND 2-PERCENT CITRIC ACID SOLUTIONS AS SOLVENTS FOR ALPHA-PHOSPHATE AND PHOSPHATE ROCK-MAGNESIUM SILICATE GLASS JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1950, 33 (02): : 234 - 260
- [4] PRODUCTION OF FERTILIZER FROM PHOSPHATE ROCK - BY FUSION WITH MAGNESIUM AND POTASSIUM SULFATES INDUSTRIAL AND ENGINEERING CHEMISTRY, 1953, 45 (03): : 646 - 652