Latin American Open Archives PortalFull-text social sciences "gray" literature. Free online.
"The Latin American Open Archives Portal is a project of the Latin Americanist Research Resources Project - LARRP, in collaboration with the Latin American Network Information Center - LANIC, to improve access to social sciences grey literature produced in Latin America. The portal provides access to working documents, pre-prints, research papers, statistical documents, and other difficult-to-access materials from the "deep Web." Typically, this content is published by research institutes, non-governmental organizations, and peripheral agencies that are not controlled by commercial publishers."