PT - JOURNAL ARTICLE AU - G. Herdan TI - Control Charts for the Standard Mortality Ratio AID - 10.1136/jech.3.2.69 DP - 1949 Apr 01 TA - British Journal of Social Medicine PG - 69--76 VI - 3 IP - 2 4099 - http://jech.bmj.com/content/3/2/69.short 4100 - http://jech.bmj.com/content/3/2/69.full SO - Br J Soc Med1949 Apr 01; 3