TY - JOUR T1 - A New Field Service Filter JF - Journal of the Royal Army Medical Corps JO - J R Army Med Corps SP - 393 LP - 397 DO - 10.1136/jramc-08-04-07 VL - 8 IS - 4 AU - R. H. Firth Y1 - 1907/04/01 UR - http://militaryhealth.bmj.com/content/8/4/393.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -