1. Dental Problems of Elementary School Children;Klein;Milbank Mem. Fund Quart.,1938
2. Studies on Dental Caries. I. Dental Status and Dental Needs of Elementary School Children;Klein;Pub. Health Rep.,1938
3. Extent of Dental Caries and Condition of Teeth of San Francisco High School Students;Sloman;California D. A. J.,1940
4. Study of Dental Needs of Adults in United States;Walls,1940
5. Frequency of Dental Services Among 9,000 Families Based on Nation-Wide Periodic Canvasses, 1928–1931;Collins;Pub. Health Rep.,1939