| Publication Type: | Journal Article |
| Year of Publication: | 1923 |
| Authors: | I. D. |
| Journal: | Trud. bulg. prir. Druzh. (Travaux de la Soci?t? Bulgare des Sciences Naturelles)Trud. bulg. prir. Druzh. (Travaux de la Soci?t? Bulgare des Sciences Naturelles) |
| Volume: | 10 |
| Pagination: | 49—53 |