1Institute of Biology and Environmental Protection,
2Institute of Physics, Pomeranian University in Słupsk
Arciszewskiego 22b, 76-200 Słupsk, Poland
Submission date: 2014-08-14
Final revision date: 2014-09-25
Acceptance date: 2014-10-13
Publication date: 2015-04-02
Pol. J. Environ. Stud. 2015;24(2):751–759