000 00300nam a2200121Ia 4500
100 _aWHO
020 _a92 4 120749 3
942 _cBK
245 _aPrevention and control of intestinal parastic infections
260 _aWorld health organization, Geneva
_c1987
082 _a614.55 WHO
300 _a86p
999 _c45495
_d45495