000 00396nam a22001577a 4500
999 _c11830
_d11830
020 _a0443044244
082 _a614.4 BAR
100 _aBARKER, D. J. P. and HALL, A. J.
245 _aPractical Epidemiology /
250 _aFourth Edition
260 _aUK,
_bLongman Group Ltd.
_c1973,
300 _a173p.: ill.; 21.5 cm.
500 _aIncludes index.
650 _aPublic Health
942 _cBK