000 00382nam a2200157 a 4500
005 20140310183233.0
008 040709s19uu xx 00 eng d
050 _aRA 651
_b.N277 1988
100 _aNTTC
245 _aThe epidemiologic approach :
_bCH5 /
_cNTTC.
260 _c1988.
300 _a47 p. :
_c22 cm.
942 _cBK
_2lcc
_kLOC
999 _c20523
_d20523