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- [2] ABSORPTION OF VITAMIN-B12 JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1960, 173 (09): : 1031 - 1031
- [7] FACTORS AFFECTING PRODUCTION OF VITAMIN-B12 IN BIOGAS SLUDGE KALIKASAN-THE PHILIPPINE JOURNAL OF BIOLOGY, 1982, 11 (2-3): : 374 - 374
- [8] THE ABSORPTION AND UTILIZATION OF VITAMIN-B12 AMERICAN JOURNAL OF CLINICAL NUTRITION, 1955, 3 (01): : 45 - 49