000			00354nam a22001577a 4500
020			_a0443037876
050			_aMED RA652.4 _bB37
100			_aBarker, D.J.P.
245			_aPractical epidemiology
250			_a4th. ed.
260			_aEdinburgh _bChurchill _c1991
300			_a173p. _bill.
650			_aEpidemiology
700			_aHall, A.J.
942			_cBK
999			_c4453 _d4453