PT - JOURNAL ARTICLE AU - I. N. Orpwood Price TI - A Rack for Use in Precipitation Tests AID - 10.1136/sti.25.4.205 DP - 1949 Dec 01 TA - The British Journal of Venereal Diseases PG - 205--205 VI - 25 IP - 4 4099 - http://sti.bmj.com/content/25/4/205.short 4100 - http://sti.bmj.com/content/25/4/205.full SO - Br J Vener Dis1949 Dec 01; 25