Charakterystyka geobotaniczna i analiza zasiegow borow i borow mieszanych na transektach badawczych: klimatycznym [wzdluz 52 st.N, od 12 st. do 32 st.E] i 'slaskim'
A geobotanical characteristic and analysis of the range of forest communities at study sites along climatic [52 degrees N, 12 degrees - 32 degrees E] and 'Silesian' transect