Note 55 — Chapter XII · THE COMMUNITY'S HEALTH
Reading edition
L. L. Lumsden, "Rural Sanitation," U. S. Public Health Service. Public Health Bulletin No. 94, Oct., 1918.
Reading edition
L. L. Lumsden, "Rural Sanitation," U. S. Public Health Service. Public Health Bulletin No. 94, Oct., 1918.