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- [3] DETERMINATION OF CAFFEINE IN COFFEE PRODUCTS, BEVERAGES, AND TABLETS JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1962, 45 (02): : 254 - 255
- [4] DETERMINATION OF CAFFEINE IN COFFEE PRODUCTS, BEVERAGES, AND TABLETS JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1962, 45 (02): : 254 - &
- [7] COLLABORATIVE STUDY OF A SPECTROPHOTOMETRIC METHOD FOR DETERMINATION OF SORBIC ACID IN FRESH DAIRY-PRODUCTS JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1974, 57 (03): : 675 - 677
- [9] NOTE ON DETERMINATION OF CAFFEINE IN COFFEE JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1963, 46 (02): : 319 - +
- [10] RAPID SPECTROPHOTOMETRIC DETERMINATION OF CAFFEINE ANALYTICAL CHEMISTRY, 1948, 20 (12) : 1162 - 1166