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- [2] VITAMIN-B12 CONCENTRATES IN THE NUTRITION OF THE MATURE DOMESTIC FOWL JOURNAL OF NUTRITION, 1950, 41 (01): : 73 - 87
- [3] VITAMIN-B12, APF CONCENTRATES, DRIED WHEY, FISH SOLUBLES AND LIVER FRACTION -L IN THE NUTRITION OF THE MATURE FOWL JOURNAL OF NUTRITION, 1950, 42 (03): : 473 - 485