TY  - BOOK
AU  - Fet, Victor.
TI  - Biogeography and Ecology of Bulgaria [electronic resource]
SN  - 9781402057816
U1  - 578.09499 
PY  - 2007///
CY  - Dordrecht
PB  - Springer
N1  - http://dx.doi.org/10.1007/978-1-4020-5781-6
ER  -