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- [3] RAPID METHOD FOR DETERMINATION OF CAFFEINE CONTENTS IN LEAF TEA ZEITSCHRIFT FUR LEBENSMITTEL-UNTERSUCHUNG UND-FORSCHUNG, 1971, 147 (05): : 281 - &
- [4] DETERMINATION OF CAFFEINE CONTENTS IN SEMEN-COLAE AND PREPARATIONS OF FOODS ZEITSCHRIFT FUR LEBENSMITTEL-UNTERSUCHUNG UND-FORSCHUNG, 1974, 155 (06): : 348 - 350
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- [10] CAFFEINE IN BEVERAGES JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1954, 156 (08): : 803 - 803