Chislenost na natsionalnite populatsii na gnezdiashtite v Bŭlgariia ptitsi, 2004 = Breeding totals of the ornithofauna in Bulgaria, 2004/
Compiled by Dimitar Nankinov ...[et al.]
- 32 pages : maps ; 21 x 30 cm.
Includes bibliographical references and index. Text in Bulgarian and English. "Published with financial suppport of DANCEE programme of the Danish Ministry of Environment" - page de titre. - Texte in bulgare et anglais.