Authors: E Neter; T A Olson; E Press; E M Reese; K T Roark; I M Rosenstock; J H Steele; B F Mattison; A G Baker; P Bierman; D H Byers; R L Huenemann; E J Kilcawley; A D Langmuir; F E Moore; M S Hilbert Journal: Am J Public Health Nations Health Date: 1968-02