References
- Chisolm J. J., Jr. Chronic lead intoxication in children. Devel. Med. Child Neurol. 1965; 7: 529
- D'Agostino R. B. An omnibus test of normality for moderate and large sample size. Biometrika 1971; 58: 341
- Delves H. T., Clayton B. E., Bicknell J. Concentration of trace metals in the blood of children. Brit. J. Prev. Soc. Med. 1973; 27: 100
- Dixon W. J., Massey F. J., Jr. Introduction to Statistical Analysis3rd ed. McGraw-Hill, New York 1969
- Flick D. F., Kraybill H. F., Dimitroff J. M. Toxic effects of cadmium: a review. Environ. Res. 1971; 4: 71
- Friberg L., Piscator M., Nordberg G. Cadmium in the Environment. Chemical Rubber Company Press, Cleveland, Ohio 1971
- Johnson N. L. Systems of frequency curves generated by methods of translation. Biometrika 1949; 36: 149
- Lin-Fu J. S. Lead Poisoning in Children. Children's Bureau Publication No. 452–1967, United States Dept. Health, Education, and Welfare, Social and Rehabilitation Service, U. S. Govt. Printing Office, Washington, D. C. 1965
- Report, “An environmental impact study of the American Smelting and Refining Company's zinc smelter, Amarillo, Texas”. Air Pollution Control Services, Texas State Department of Health. 1972
- Snedecor G. W., Cochran W. G. Statistical Methods6th ed. Iowa State Univ. Press. 1969
- Waldron H. A. The blood lead threshold. Arch. Environ. Health 1974; 29: 271