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International Groundwater Resources Assessment Centre
The Global Groundwater Information System (GGIS) is an interactive, web-based portal to groundwater-related information and knowledge. The GGIS consists of several modules... -
Puerto Rico - Census of Population and Housing 1990 - IPUMS Subset
IPUMS-International is an effort to inventory, preserve, harmonize, and disseminate census microdata from around the world. The project has collected the world's largest archive... -
Puerto Rico - Census of Population and Housing 1980 - IPUMS Subset
IPUMS-International is an effort to inventory, preserve, harmonize, and disseminate census microdata from around the world. The project has collected the world's largest archive... -
Puerto Rico - Census of Population and Housing 1970 - IPUMS Subset
IPUMS-International is an effort to inventory, preserve, harmonize, and disseminate census microdata from around the world. The project has collected the world's largest archive...