1. The Vitamin D Requirement of the Sheep;Andrews;New Zealand J. Sci. Technol.,1945
2. The Vitamin D Requirement of Dairy Calves;Bechdel;Pa. Agr. Expt. Sta. Bull,1938
3. Rickets in Calves;Bechdel;Pa. Agr. Expt. Sta. Bull,1933
4. Vitamin D Studies in Cattle. IV. Corn Silage as a Source of Vitamin D for Dairy Cattle;Bechtel;J. Dairy Sci.,1936
5. The Antirachitic Value of Fresh Spinach;Chick;Biochem. J,1926