Czerepko, Janusz
Boczoń, Andrzej
Wróbel, Michał
Gawryś, Radosław
Sokołowski, Karol
Funding for this research was provided by:
Directorate-General of the State Forests in Poland (Grant No. BLP-299)
Article History
Received: 22 August 2016
Accepted: 6 March 2018
First Online: 10 March 2018