000 00359nam a2200133Ia 4500
008 160509s9999 xx 000 0 und d
020 _a632-05430-1
100 _aArmitage, P
245 _aStatistical Methods In Medical Research : Per(Statistics)
250 _a3rd
260 _bBlackwell Scientific Publications
_c1974
300 _a504
650 _aStatistics
999 _c1390
_d1390