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| Essentials to Environmental Health (Essential Public Health) von Robert Friis von Jones & Bartlett Publ. |
Epidemiology for Public Health Practice von Robert H. Friis und Thomas A. Sellers von Jones & Bartlett Publishers Inc.,U.S. |
Introductory Biostatistics for the Health Sciences: Modern Applications Including Bootstrap (Wiley Series in Probability and Statistics) von Michael R. Chernick und Robert H. Friis von Wiley & Sons |