000 00398nam a22001577a 4500
020 _a9780632015016
050 _aMED REF R852
_bA75
100 _aArmitage P
245 _aStatistical methods in medical research
250 _a2nd ed
260 _aLondon
_bBlackwell scientific publications
_c1987
300 _axiii,559p.
_bill,index
650 _amedical reseach
700 _aBerry G
942 _cBK
999 _c474
_d474