011230000a22003250004500 PH-MaWHO 20241108112051.0 9241400528 Series Files Pollock, Thomas Millar 641913 Geneva : World Health Organization, 1966. Bell, J. A. 641914 Bradford Hill, Austin 641915 Cockburn, W. Chas 641916 Cvjetanovic, Branko 641917 Evans, D. G. 641918 Kostrzewski, Jan 641919 Schofield, F. D. 641920 World Health Organization. 641634 Trials of prophylactic agents for the control of communicable diseases : a guide to their organization and evaluation. 92 p. http://www.who.int/iris/handle/10665/41778 WHO monograph series ; no. 52 eng Vaccines Administration and usage 641921 Communicable disease control 115366 Clinical trials 641922 WHOLIS MONO 2017 retain Mark 16-02-2018 10:32:42 39 39 0 0 0 0 WPRO WPRO 2021-05-23 0 Series Files 00039 2024-01-24 00:00:00 2021-05-23 MONO