000 00375nam a2200145Ia 4500
008 211230s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aMacmahon, Brian
245 0 _aEpidemiologic methods
250 _a1st
260 _bLittle, Brown & Co.
_aBoston
_c1960
300 _avii,302p p.
653 _aEpidemiology
942 _c1
999 _c253440
_d253440