Bibliotecas de Economía y Administración ·
Catálogo
UNIVERSIDAD NACIONAL DEL SUR |
|
1. | Soil degradation : a threat to developing-country food security by 2020? / Sara J. Scherr. | 1999 |
I-IFPRI-FA27
|
2. | Environment, employment and development / A. S. Bhalla. | 1992 |
331.2
B469 |