NATIONAL INFRASTRUCTURES

PORTUGAL

NATIONAL SYSTEM OF GEOGRAPHIC INFORMATION

http://snig.cnig.pt/

ENGLAND

ORDNANCE SURVEY

http://www.ordvy.govt.uk/

BELGIUM

GIS-FLANDERS

http://130.11.52.184/servlet/FGDCServlet/

FINLAND

NATIONAL LAND SURVEY OF FINLAND

http://www.nls.fi/index_e.html/

SWIZERLAND

INSTITUTE OF GEOGRAPHY - SWISS FEDERAL INSTITUTE OF TECHNOLOGY

PAN EUROPEAN INITIATIVES

MEGRIN

http://www.megrin.org/

PAN EUROPEAN INITIATIVES

CENTRE OF EARTH OBSERVATION

http://www.ceo.org/

UNITED STATES

USGS-UNITED STATES GEOLOGICAL SURVEY

http://www.usgs.gov//

AVSTRALIA

ENVIRONMENT AUSTRALIA ONLINE

http://kaos.erin.gov.au/index.html/

GI SPECIFIC SEARCHING INTERFACES

PAN EUROPEAN

CEO- EUROPEAN WIDE SERVICE EXCHANGE

http://ewse.ceo.org/

PAN EUROPEAN

EUROPEAN ENVIRONMENT AGENCY

http://www2.mu.niedersavhsen.de/system/cds//

UNITED STATES

GLOBAL LAND INFORMATION SYSTEMS

http://edcwww.cr.usgs.gov/webglis/

UNITED STATES

NATIONAL GEOSPATIAL DATA CLEARINGHOUSE

http://130.11.52.184/servlet/FGDCServlet/

http://www-mel.nrlmry.navy.mil/test-bin/fgdc/cgi-bin/genQueryForm/

OTHER SEARCHING MECHANISMS

ALTAVISTA

http://www.altavista.com/