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The Center for Hydrographic Studies

Link: http://www.cedex.es/hidrograficos/presentacion.html

 

Spanish Water Information System (HISPAGUA)

Link: http://www.hispagua.cedex.es

 

Spanish Association of Urban and Environment Equipment (AMEC URBIS)

Link: http://www.urbis.amec.es

 

Spanish Desalination and Water Reuse Association (AEDYR)

Link: http://www.aedyr.com