1. Effect of vitamin B12 and APF supplements on hatchability of chicken eggs;Carver;Poultry Sci.,1950
2. Vitamin B12 requirements of hens as affected by choline and antibiotic additions to the diet;Johnson;Poultry Sci.,1951
3. Role of vitamin B12 in reproduction of poultry;Lillie;Proc. Soc. Exp. Biol. Med.,1949
4. Vitamin B12 requirements for hatchability, viability and growth;Milligan;Poultry Sci.,1950
5. Studies of the effect of vitamin B12 on hatchability;Peeler;Poultry Sci.,1951