Articles

• The effect of a water dam on Lake Powidzkie and its vicinity

  Bogumił Michał Nowak, Mariusz Ptak

  5-13

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• An attempt to reconstruct selected elements the original site topography of the Teutonic castles at Unisław and Starogród (Chełmno Land, Northern Poland) based on archaeological and cartographic data

  Paweł Molewski, Bogusz Wasik, Marcin Wiewióra

  15-26

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• Solar radiation variability at Koniczynka near Toruń (Central Poland) in the years 2003–2016

  Marek Kejna, Joanna Uscka-Kowalkowska

  27-40

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• Optical density of Scots pine wood and climatic conditions in Toruń, Poland

  Aleksandra Pospieszyńska, Marcin Koprowski, Rajmund Krzysztof Przybylak

  41-52

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• Hydro-morphological and hydrochemical conditions of the Parsęta River

  Józef Szpikowski, Grażyna Szpikowska

  53-62

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• An attempt at a typology of karst lakes in the Połaniec Basin (Małopolska Upland)

  Michał Stachura, Dariusz Wieczorek, Artur Zieliński

  63-74

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• Water temperature in the lakes of Northern Poland during the bathing season

  Rajmund Skowron

  75-90

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• Mineralogy and deformation structures in components of clastic sediments from the Morasko meteorite lake

  Agata Duczmal Duczmal-Czernikiewicz, Janusz Choiński, Mariusz Ptak, Andrzej Muszyński

  91-100

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• Seasonal structure of water stages on lakes in Northern Poland

  Katarzyna Plewa, Dariusz Wrzesiński, Mariusz Ptak

  101-110

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• Analysis of air mass back trajectories with present and historical volcanic activity and anthropogenic compounds to infer pollution sources in the South Shetland Islands (Antarctica)

  Danuta Szumińska, Sebastian Czapiewski, Małgorzata Szopińska, Żaneta Polkowska

  111-137

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