1. Armstrong, C., American Journal of Public Health 27: 103 (1937).
2. BODIAN, D, AMERICAN JOURNAL OF HYGIENE 55: 414 (1952).
3. BODIAN, D, AMERICAN JOURNAL OF HYGIENE 56: 78 (1952).
4. BODIAN, D, AMERICAN JOURNAL OF HYGIENE 60: 83 (1954).
5. BODIAN, D, AMERICAN JOURNAL OF HYGIENE 60: 339 (1954).