Methods for Field Trials of Interventions against Tropical Diseases: A `Toolbox' Editat de P. G. Smith et al. 11 dec 1991 Hardback Preț: 434.87 lei 520.20 lei 41-52 zile -16%
Field Trials of Health Interventions: A Toolbox Editat de Peter G. Smith et al. 25 iun 2015 Paperback Preț: 285.87 lei 353.52 lei 31-37 zile -19%