Some principles of conducting of Reed Books. - V.P. Belik. - Berkut. 3 (2). 1994. P. 141-142.
Common principles of relating of protected birds to different categories in the Red Book and questions of terminology are discussed. The clear criterions permit to avoid mistaken entering species. It is worth-while to except the accidental and vagrant birds. In names of categories it is more important to emphasize the relative number of species and the character of negative processes in their populations. [Russian].
Key words: Red Book, bird protection, vulnerable species, category of protection.