000 00287nam a2200121Ia 4500
100 _aWilliams, trefor
020 _a92 4 1544007
942 _cBK
245 _aFood, environment and health
260 _aWorld health organization, Geneva
_c1990
082 _a613.1 Wil
300 _axix,129
999 _c59255
_d59255