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- [31] THE TOTAL TOCOPHEROL (VITAMIN-E) CONTENT OF DUTCH BUTTER - WITH REFERENCE TO THE CAROTENE AND VITAMIN-A CONTENTS NEDERLANDS MELK-EN ZUIVELTIJDSCHRIFT, 1955, 9 (04): : 275 - +
- [38] THE CONVERSION OF BETA-CAROTENE INTO VITAMIN-A VITAMINS AND HORMONES-ADVANCES IN RESEARCH AND APPLICATIONS, 1960, 18 : 371 - 386