TY - JOUR T1 - The Filter-Passer of Influenza JF - Journal of the Royal Army Medical Corps JO - J R Army Med Corps SP - 317 LP - 320 DO - 10.1136/jramc-40-04-13 VL - 40 IS - 4 AU - M. H. Gordon Y1 - 1923/04/01 UR - http://militaryhealth.bmj.com/content/40/4/317.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -