000 00281nam a22001097a 4500
999 _c302773
_d302773
020 _a9780443044243
082 _a614.40723
_bBAR
100 _a Barker, D. J.P.
245 _aPractical epidemiology /
_c Barker, D. J.P. and Hall, A. J.
260 _aU K:
_bELBS,
_c1973.
942 _cBK