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  • Alaska pipeline crosses Tanana river
    20379

  • Alaska pipeline crosses Tanana river
    20378

  • Alaska pipelinecrosses Tanana river
    20372

  • wind energy in Danmark
    20329

  • wind energy in Danmark
    20328

  • wind energy in Danmark
    20327

  • geothermic power plant on Iceland
    20224

  • geothermic power plant on Iceland
    20223

  • geothermic power plant on Iceland
    20222

  • geothermic power plant on Iceland
    20221

  • geothermic power plant on Iceland
    20220

  • geothermic power plant on Iceland
    20219

  • former nuclear power plant in Lubmin
    20135

  • algee in Alster lake
    20101

  • cruiseship with exhaust
    20054

  • cruiseship with exhaust
    20053

  • cruiseship with exhaust
    20052

  • cruiseship with exhaust
    20051

  • windpower and rape
    20026

  • windpower and rape
    20025
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