1. AYERS S. HENRY Casein media adapted to bacterial examination of milk. 28th Ann. Rpt. Bur. Animal Industry 225-229.
2. Extracts of pure dry yeast for culture media;Rupp PHILIP;Jour. Bact.,1920
3. The advantage of a carbohydrate medium in the routine bacterial examination of milk;Jour. Bact.,1916