| Publication Type: | Journal Article |
| Year of Publication: | 1922 |
| Authors: | F. M. Root |
| Journal: | American Journal of Hygiene |
| Volume: | 2 |
| Issue: | 4 |
| Pagination: | 394–405 |
| Full Text |
| Publication Type: | Journal Article |
| Year of Publication: | 1922 |
| Authors: | F. M. Root |
| Journal: | American Journal of Hygiene |
| Volume: | 2 |
| Issue: | 4 |
| Pagination: | 394–405 |
| Full Text |