000 00306nam a2200097Ia 4500
100 _aWorld Health Organisation
245 _aEvaluation and Testing of drugs for Mutagenicity : Principles and Problems W H O Rep Ser No 482
260 _bW H O, Geneva
082 _aL:4:6N71t/N71/B09853
300 _app 18; 24*16
999 _c3371
_d3371