Water transparency measurements using Secchi disc in lakes as part of the Lake Monitoring Program in Ploen County, Northern Germany from 1991 to 2014 (NCEI Accession 0138947)

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                                            [
  "0138947",
  "WATER TRANSPARENCY",
  "Secchi disk",
  "optical",
  "visual observation",
  "County Government Ploen",
  "North Sea",
  "oceanography",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS",
  "SECCHI DISKS > SECCHI DISKS",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > NORTH SEA"
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