Helminth control in school-age children a guide for managers of control programmes / [electronic resource] :
A. Montresor ... [et al.].
- Geneva : World Health Organization, 2002.
- viii, 64 p. : ill., maps, forms.
Includes bibliographical references (p. 52-53).
Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries.