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Шкурлов, Игорь. Климентий Семёнович Сербин / Игорь Шкурлов // Край Смоленский, 2021. – № 4 — <URL:ftp://smolensklib.ru/bd/dvorus/d0000493.pdf>.
| Period | Read | Copy | Open | Total | |
|---|---|---|---|---|---|
| Year 2023 | 1 | 0 | 0 | 0 | 1 |
| Total | 1 | 0 | 0 | 0 | 1 |