PT - JOURNAL ARTICLE AU - P. Wintersgill TI - CHANGES IN THE ENVIRONMENT—AN EPIDEMIOLOGIST'S VIEW DP - 1975 Aug 01 TA - The Journal of the Royal College of General Practitioners PG - 605--606 VI - 25 IP - 157 4099 - http://bjgp.org/content/25/157/605.2.short 4100 - http://bjgp.org/content/25/157/605.2.full SO - J R Coll Gen Pract1975 Aug 01; 25