- Archival Number: NA IA NANU, f. 16, spr. 1/3
- Author: Viktor Petrov
- Language of the Document: russian
- Date of the Document: 1938, 1950, 1956, 1957
- Reproduction Method: Manuscript, typescript
- Number of Pages: 19
- External Appearance: Blue, black ink
- Material: Paper
- Description: Various certificates of Viktor Petrov from different years.
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