4 1 10 Beaglehole, R. Primary Author Bonita, R. Primary Author Kjellstrom, T. Primary Author mixed material 9241544465 England World Health Organization Geneva 1993 Weiss, Noel S. Primary Author mixed material 0195037189 USA Oxford University Press 1986 The Essentials Fletcher, Robert H. Primary Author Fletcher, Suzanne W. Primary Author Wagner, Edward H. Primary Author mixed material 0683032518 USA A Waverly Company 1940 An introduction To Traditional And Modern Epidemiology Gerstman, B. Burt Primary Author mixed material 0471400289 USA Wiley-Liss 2003