1. Le Dosage Microbiologique des Vitamines du Groupe B;Adrian,1959
2. Ingredient analysis table;Allen;Feed-stuffs,1973
3. Studies of the need for supplemental biotin in chick rations;Anderson;Poultry Sci.,1970
4. Interaction between biotin and feed ingredients;Atkinson;Texas Turkey Industry Day Reports, Temple, Texas, Nov.,1972
5. Clinical Vitaminology, Methods and Interpretations;Baker,1968