TY - JOUR T1 - Preventive medicine, community health and social services JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 556 LP - 556 VL - 21 IS - 110 A2 - , Y1 - 1971/09/01 UR - http://bjgp.org/content/21/110/556.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -