TY - BOOK AU - edited by Peter G. Smith and Richard H. Morrow TI - Field Trials of Health Interventioms in Developing Countries : A Toolbox SN - 9780333640586 U1 - 620.8 PY - 1991///. CY - London . : PB - Macmillan Education Ltd . ; KW - Developing countries - health interventions N1 - includes references and index ER -