practical epidemiology
BARKER, D.J.P.
practical epidemiology - Ediriburgh, Churchil Livingstone 1982 - 159 p.
0000443023034
Statistics : Medicine : epidemiology
519.2:61 / B16
practical epidemiology - Ediriburgh, Churchil Livingstone 1982 - 159 p.
0000443023034
Statistics : Medicine : epidemiology
519.2:61 / B16