TY - JOUR T1 - Applied Mathematical Ecology JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 254 LP - 254 DO - 10.1136/jech.44.3.254-b VL - 44 IS - 3 AU - Chris Bain Y1 - 1990/09/01 UR - http://jech.bmj.com/content/44/3/254.3.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -