http://www.redalyc.org/, http://www.latindex.org/, http://www.scielo.org/php/index.php

http://www.opengeospatial.org/, http://www.isotc211.org/, http://landsat.usgs.gov/, http://faostat3.fao.org/faostat-gateway/go/to/browse/Q/*/S,

http://miranda.abae.gob.ve/

http://igvsb.geoportalsb.gob.ve/, http://www.geosur.info/geosur/, http://www.idee.es/, http://www.cenatelgeo.fii.gob.ve/

http://www.cenatelgeo.fii.gob.ve/ http://igvsb.geoportalsb.gob.ve/

http://www.geosur.info/map-viewer/index.html?config=config-rms-es.xml&lang=es_ES

http://miranda.abae.gob.ve/

http://landsat.usgs.gov/ http://sigpac.mapa.es/fega/visor/