References
- Ballard , A. E. and Thornton , C. W. D. 1941 . Ind. Eng. Chem., Anal. Ed. , 13 : 893
- Stock , A. and Lux , H. 1931 . Zeiischrift fur angewandte Chemie , 44 : 200
- Storlazzi , E. A. and Elkins , H. B. 1941 . J. Ind. Hyg. and Toxicol. , 23 : 459
- Hemeon , W. C. L. 1955 . Personal Communication , Pittsburgh : Industrial Hygiene Foundation .
- Fabiani , P. and Queuille , A. 1950 . Ann. biol. clin. (Paris) , 8 : 199