TY - GEN TI - Helminth control in school-age children: a guide for managers of control programmes SN - 9789241548267 PY - 2011/// CY - Geneva PB - World Health Organization KW - Helminthiasis KW - Schistosomiasis KW - Helminths KW - Anthelmintics KW - Child KW - National health programs KW - Guidelines ER -