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- [5] REPORT ON VITAMIN-D IN POULTRY FEED SUPPLEMENTS JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1950, 33 (03): : 645 - 647
- [6] REPORT ON VITAMIN-D IN POULTRY FEED SUPPLEMENTS JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1952, 35 (03): : 715 - 721