Guyatt, H.

Brooker, S., Booth, M. & Guyatt, H., 1999. Comparisons of schistosome and geohelminth infection prevalences in school-aged children from selected areas of Africa : implications for rapid assessment and combined control. , pp.p. 125-126 : 1 fig. Available at: https://es.ircwash.org/sites/default/files/245.10-99CO-16236.pdf.