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Spory nizhnego silura (Spores of the Lower Silurian).
| Naumova, S.N. | |
| 1950 | |
| Trudy Konferentsii po Sporovo-Pyltsevomu Analizu, 1948, Goda Geograficheskii Fakultet, Izdatelstvo | |
| Spory nizhnego silura (Spores of the Lower Silurian). |
Naumova, S.N., 1950: Spory nizhnego silura (Spores of the Lower Silurian); Trudy Konferentsii po Sporovo-Pyltsevomu Analizu, 1948, Goda Geograficheskii Fakultet, Izdatelstvo Moskovskogo Universiteta, p.165-190.