TY - JOUR T1 - Nine Lessons in Collective Investigation JF - The Journal of the College of General Practitioners JO - J Coll Gen Pract SP - 517 LP - 518 VL - 3 IS - 4 AU - W. J. H. Lord Y1 - 1960/11/01 UR - http://bjgp.org/content/3/4/517.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -