000 00366cam a22001574a 4500
020 _a072168338X
050 0 0 _aRA651
_bG58
100 1 _aGordis, Leon,
245 1 0 _aEpidemiology
250 _a2nd ed.
260 _aPhiladelphia
_bW.B. Saunders
_c2000
300 _axii,308p.
_bill.
650 0 _aEpidemiology.
650 2 2 _aEpidemiologic Methods.
942 _cBK
999 _c11426
_d11426