Problemas vitales de Mexico : (cuatro conferencias).
| Format: | Book |
|---|---|
| Language: | Spanish |
| Published: |
México :
Secretaría de Educación Pública,
1946.
|
| Series: | Biblioteca enciclopédica popular ;
129. |
| Subjects: |
| Physical Description: | 93 pages : illustrations ; 18 cm. |
|---|