1. Association of Official Agricultural Chemists, 1940. Methods of Analysis. Sth Ed., p. 371-372.
2. Use of toes rather than tibiae in A.O.A.C. chick method of vitamin D determination;Baird;J.A.O.A.C.,1942
3. Factorial design and covariance in the biological assay of vitamin D;Bliss;J. Am. Stat. Assoc.,1940
4. Bliss, C. I., 1943. Personal communication.
5. Biological Assay;Bliss;Ann. Rev. Physiol.,1943