Conservation of natural resources (of the United States) /
Guardat en:
| Autor principal: | |
|---|---|
| Format: | Llibre |
| Idioma: | English |
| Publicat: |
N.Y. :
Wiley,
1950.
|
| Matèries: |
| Descripció de l’ítem: | A rev. version of, Our national resources and their conservation. 2nd ed. 1939. Ed. by A.E.Parkins and J.R.Whitaker. |
|---|