000 002620000a22001210004500
041 _aEng
080 _aL:4:51 ?-;3
082 _aL:4:51 ?-;3
100 _aZHDANOV V
245 _aEpidemiology (4 cops).
260 _aMoscow
_bF.L.P.H
_c?
650 _aDISEASES
999 _c101368
_d101368