000 00324nam a22001457a 4500
020 _a9781455737338
050 _aMED RA651
_bG58
100 _aGordis, Leon.
245 _aEpidemilogy
250 _a5th ed.
260 _aPhiladelphia
_bElservier
_c2014
300 _axv,392p.
_bill.
650 _aEpidemiology
942 _cBK
999 _c37751
_d37751