1. The relation of nutrition to egg production and hatchability in chickens;Bethke;II. Effect of choline chloride, methionine, and certain animal and marine products. Poultry Sci.,1946
2. The relation of nutrition to production and hatchability of chicken eggs;Bethke;III. Effect of pantothenic acid, nicotinic acid, pyridoxine, folic acid, biotin, and certain marine products. Poultry Sci.,1947
3. The influence of hen's diet on growth of progeny;Bethke;Poultry Sci.,1947
4. The relation of nutrition to egg production and hatchability in chickens;Bethke;I. Effect of protein supplements and alfalfa meal. Poultry Sci.,1946
5. Effectiveness of dietary supplements in increasing hatachability of eggs and viability of progeny of hens fed a diet containing a high level of soybean oil meal;Bird;Poultry Sci.,1946