Bibliography
- Ayre, C. A., and Anderson, J. A. Canadian J. Res. C, 17, 239 (1939).
- Koch, J. R., Nelson, O., and Ehrnst, L. Ind. Eng. Chem. 11, 35 (1939).
- Laufer, S. J. Assoc. Offic. Agr. Chemists 20, 307 (1937).
- Miller, B. S. J. Assoc. Offic. Agr. Chemists 30, 659 (1947).