Biogeography and Ecology of Bulgaria  [electronic resource] / 
edited by Victor Fet, Alexi Popov. 
 - Dordrecht :  Springer,  2007. 
 - xxi, 687 p. :  ill., maps, digital ;  24 cm. 
 - Monographiae Biologicae ;  82 .
<br/><br/><label>ISBN: </label>9781402057816 (electronic bk.) 9781402044175 (paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biogeography--Bulgaria<br/>Natural history--Bulgaria<br/>Ecology--Bulgaria.<br/>Life Sciences.<br/>Ecology.<br/>Geography (general).<br/>Nature Conservation.<br/>Zoology.
<br/><br/><label>Dewey Class. No.: </label>577.09499