00500     2200181   4500001002100000005001500021035002500036008004100061020001800102082001000120090001000130100002200140245005600162260004200218650001700260084001600277300002500293INLIS00000000000286120231116105738  a0010-061600000002860231116                           0 eng    a0-333-16564-0  a614.4  aAld i  aAlderson, Michael1 aAn Introduction to Epidemiology /cMichael Alderson  aLondon :bThe Macmillan Press,c1977.  aEpidemiology  a614.4 Ald a  aix, 228 p, ;c23 cm.