TY  - BOOK
AU  - Hansson,Lennart
TI  - Ecological principles of nature conservation: applications in temperate and boreal environments 
T2  - Conservation Ecology Series. Principles, Practices and Management
PY  - 1992///
CY  - London
PB  - Elsevier
KW  - Ekologia
UR  - http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=29719
ER  -