title: Fourth annual report of the UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases.
mesh_terms: D000818:Animals; D000847:Annual Reports as Topic; D004358:Drug Therapy; D006801:Humans; D007918:Leprosy / Q000276:immunology*; D009166:Mycobacterium leprae / Q000302:isolation & purification; D012106:Research; D014944:World Health Organization