@prefix ns0: <https://gcmd.earthdata.nasa.gov/kms#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/493a893e-2d2b-417c-8e72-2ced8a9fffcc>
  ns0:altLabel [ ] ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/af0968ce-ffe3-44a0-86de-2ec9b9a8fa5d> ;
  skos:prefLabel "GTOPO30"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects> ;
  skos:definition """Global 30 Arc-Second Elevation Data Set (GTOPO30) is a global
raster Digital Elevation Model (DEM) with a horizontal grid
spacing of 30 arc seconds (approximately 1 kilometer). GTOPO30
was derived from a variety of raster and vector sources. The
data is expressed in geographic coordinates (latitude/longitude)
and is referenced to the World Geodetic Survey (WGS) system of
1984 (WGS84). The files are available in generic binary (16-bit
signed integer) format and are distributed on CD-ROM, FTP
(compressed), and 8-mm tape.

Prices:
CD-ROM &#3610.00 per CD
8-mm tape (high density) &#3615.00
FTP download no charge

For more information, link to
"http://edc.usgs.gov/products/elevation/gtopo30.html#description\""""@en ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/af0968ce-ffe3-44a0-86de-2ec9b9a8fa5d>
  skos:prefLabel "G - I"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/493a893e-2d2b-417c-8e72-2ced8a9fffcc> .