Παραπομπή APA
European Environment Agency. (1998). Nature conservation: Annual topic update 1998. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Environment Agency. Nature Conservation: Annual Topic Update 1998. Luxembourg: Office for Official Publications of the European Communities, 1998.
Παραπομπή MLAEuropean Environment Agency. Nature Conservation: Annual Topic Update 1998. Luxembourg: Office for Official Publications of the European Communities, 1998.
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