2019, vol. 21, no. 2

Articles
Title	Author
Impact of compression on bed porosity in gravitational filtration process	Jacek Piekarski
Transformation of Density Hydrographic Network in Headwaters of Piwonia River	Antoni Grzywna, Andrzej Bochniak, Kamil Nieścioruk
Concept of Near-Autonomous Passive House	Marek Ogryzek, Mateusz Ciski
Occurrence of Oribatid Mites During the Revitalization of Bare Root Forest Nursery	Andrzej Klimek, Stanisław Rolbiecki, Roman Rolbiecki, Piotr Stachowski, Cezary Podsiadło
Phosphorus and its Fractionation in Bottom Sediments of Selected Lakes of Wielkopolskie Lakeland in Central and Western Poland	Łukasz Bryl, Tadeusz Sobczyński
Bending Moment of the Waste Fine Aggregate Concrete Beams	Jacek Domski, Mateusz Zakrzewski, Joanna Laskowska-Bury
Study of the Outflow Conditions of the Weir Skoki on the Paklica River	Natalia Walczak, Mateusz Hämmerling, Paweł Zawadzki, Anna Oliskiewicz-Krzywicka, Tomasz Dąbrowski
Assessment of the Ecological Status and the Need for Renovation of Drainage Ditches in the Strumień Junikowski Catchment	Joanna Kocięcka, Daniel Liberacki, Piotr Stachowski, Mariusz Korytowski, Jerzy Mirosław Kupiec
Analysis of Benefits and Barriers in Implementing the Eco-Management and Audit Scheme in Selected Organisations	Agnieszka Ociepa-Kubicka
Characteristics of Sludge Node Operation at Wastewater Treatment Plant in Żory	Dariusz Zdebik, Piotr Zawadzki, Michał Pieczonka

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