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  Radioglaciology - V.V. Bogorodsky, C.R. Bentley, P.E. Gudmandsen - Google Books

  https://books.google.de/books?id=EgDwCAAAQBAJ&pg=PA8&lpg=PA8&dq=mothes+brockamp+1926&source=bl&ots=wy9HgKQJEv&sig=vesJpPzq5fxY5_

  Antarctica, the sixth continent, was discovered more than 160 years ago. Since then this large, mysterious continent of ice and penguins has attracted world interest. Scientific expeditions from various countries have begun to study the geographical and…

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  Environmental Science and Technology: A Sustainable Approach to Green ... - Stanley E. Manahan - Google Books

  https://books.google.de/books?id=1-HKBQAAQBAJ&pg=PA471#v=onepage

  Formally established by the EPA nearly 15 years ago, the concept of green chemistry is beginning to come of age. Although several books cover green chemistry and chemical engineering, none of them transfer green principles to science and technology in…

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  Category:Hydrology – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Hydrology?uselang=de

  Keine Beschreibung vorhanden.

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  Category:Water – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Water?uselang=de

  Keine Beschreibung vorhanden.

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  Category:Physical geography – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Physical_geography?uselang=de

  Keine Beschreibung vorhanden.

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  "Benking" in the International Encyclopedia of Systems and Cybernetics

  http://benking.de/systems/encyclopedia/newterms/#_Toc87362165

  Keine Beschreibung vorhanden.

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  "Benking" in the International Encyclopedia of Systems and Cybernetics

  http://benking.de/systems/encyclopedia/newterms/

  Keine Beschreibung vorhanden.

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  Prof. Dr. em. Heinz W. Zöttl — Professur für Bodenökologie

  https://www.bodenkunde.uni-freiburg.de/mitarbeiter/heizoe

  Keine Beschreibung vorhanden.

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  Looking For Detachment: Yuba Dredges No. 17 and 21

  http://highway8a.blogspot.de/2011/04/yuba-dredges-no-17-and-21.html

  Keine Beschreibung vorhanden.

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  Category:Bodies of water – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Bodies_of_water?uselang=de

  Keine Beschreibung vorhanden.

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