| Publication Type: | Journal Article |
| Year of Publication: | 1938 |
| Authors: | J. R. de Leon |
| Journal: | Boletin de la Direccion General de Sanidad Publica (Guatemala) |
| Volume: | 9 |
| Pagination: | 411–424 |
| Full Text |
| Publication Type: | Journal Article |
| Year of Publication: | 1938 |
| Authors: | J. R. de Leon |
| Journal: | Boletin de la Direccion General de Sanidad Publica (Guatemala) |
| Volume: | 9 |
| Pagination: | 411–424 |
| Full Text |