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Start Over You searched for: Year 1997 Remove constraint Year: 1997 Access Public Remove constraint Access: Public Bounding Box -40.000931 39.999015 -39.999064 40.000987 Remove constraint Bounding Box: -40.000931 39.999015 -39.999064 40.000987

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4. Global GIS : Aqueducts, canals, flumes, penstocks

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing major roads worldwide and was published as part of the USGS Global GIS : global coverage databas... American Geological Institute.

5. Global GIS : Hydrography danger points

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide navigational hazards or dangers near ocean and navigable lake coastlines and was publishe... American Geological Institute.

6. Global GIS : Land ice areas

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing land ice areas (snow fields or ice fields which are on land) worldwide and was published as part ... American Geological Institute.

7. Global GIS : Miscellaneous hydrography point features

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide miscellaneous hydrography point features and was published as part of the USGS Global GIS... American Geological Institute.

8. Global GIS : Miscellaneous industry points

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide miscellaneous industry point features and was published as part of the USGS Global GIS : ... American Geological Institute.

10. Global GIS : Natural resources extraction points

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide locations where natural resources are being extracted from the earth. It was published as... American Geological Institute.