000 00342nam a2200121Ia 4500
100 _aWorld Health Organization
020 _a92 4 157144 6
942 _cBK
245 _aPrinciples for evaluating chemical effects on the aged population
260 _aWorld Health Organization, Geneva
_c1993
082 _aR641.71 W.H.O./E.H.C.
300 _a159
999 _c32280
_d32280