000 00345nam a2200133Ia 4500
100 _aArmitage, P. & Berry, G.
020 _a0-632-01501-2
250 _a2nd ed
942 _cBK
245 _aStatistical methods in medical research
260 _aBlackwell Scientific publications, Oxford
_c1987
082 _a610.72 Arm/Ber
300 _axiii,559p
999 _c60615
_d60615