Authors
Renata Brzozowska
Department of Environment Protection Engineering, Warmia and Mazury University, Olsztyn, Poland
Helena Gawrońska
Department of Environment Protection Engineering, Warmia and Mazury University, Olsztyn, Poland
© 2009 Renata Brzozowska, Helena Gawrońska, published by University of Gdańsk
This work is licensed under the Creative Commons License.