| Publication Type: | Journal Article |
| Year of Publication: | 1927 |
| Authors: | F. M. Root |
| Journal: | American Journal of Hygiene |
| Volume: | 7 |
| Issue: | 5 |
| Pagination: | 599–605, 2 pls |
| URL: | http://aje.oxfordjournals.org/content/7/5/599.full.pdf |
| Full Text |
| Publication Type: | Journal Article |
| Year of Publication: | 1927 |
| Authors: | F. M. Root |
| Journal: | American Journal of Hygiene |
| Volume: | 7 |
| Issue: | 5 |
| Pagination: | 599–605, 2 pls |
| URL: | http://aje.oxfordjournals.org/content/7/5/599.full.pdf |
| Full Text |