000 00446nam a2200157Ia 4500
008 211231s9999 xx 000 0 und d
020 _a81-7225-027-4
040 _cJayakar Knowledge Resource Centre
100 _aHill, Austin Bradford
245 0 _aBradford hill's principles of medical statistics
250 _a12th
260 _bB I Publications
_aNew Delhi
_c1993
300 _aviii,339p p.
653 _aMedical statistics
942 _c1
999 _c282851
_d282851