摘要：A method is described for the supervision of technicians engaged in microscopical screening of large numbers of stools for Schistosoma mansoni ova. The scheme presents graphically a regularly updated longitudinal evaluation of both individual and group standards of technical competence. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (500K), or click on a page image below to browse page by page. 309 310 311 312
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