Boletín Aire Limpio. Edición especial. PROMUT's de Sucre y Tarija. El reto de pasar de la planificación a la implantación de las medidas.

The Digital Archive of Latin American and Caribbean Ephemera is a steadily growing repository containing a previously unavailable subset of Princeton’s Latin American Ephemera Collection as well as newly acquired materials being digitized and added on an ongoing basis.