00426cam a22001817a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102100002500118245004100143260002900184300001000213650002100223CHAP20220817041305.0971013s1957 r 00010 d a10492 a11464 a10702 cCHAP a614.49bB3500aBailey, Norman T. J.14aThe mathematical theory of epidemics aLondon :bGriffin,c1957 a194 p14aEpidemiología.