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- [5] EFFECT OF DIFFERENT SERUM CONCENTRATIONS OF ANTIMICROBIAL DRUGS ON LACTOBACILLUS LEICHMANNII VITAMIN-B12 ASSAY ACTA MEDICA SCANDINAVICA, 1973, 194 (06): : 567 - 570
- [10] A MICROBIOLOGICAL ASSAY FOR VITAMIN-B12 USING LACTOBACILLUS-LEICHMANNII PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE, 1949, 72 (02): : 515 - 521