1. The essential nature of glycine and proline for growing chickens;Graber;Poultry Sci.,1973
2. Vanadium as an essential nutrient;Hopkins;Fed. Proc.,1974
3. Nutrient requirements of domestic animals. 1. Nutrient requirements of poultry;National Research Council,1971
4. "Newer" trace elements in human nutrition;Nielson;Food Technol.,1974
5. Modification of the Illinois Reference Standard amino acid mixture;Sasse;Poultry Sci.,1973