| Title | Dušan Tvrdoreka, Boris Kraevski (Trgovački predstavnik SSSR-a u Južnoj Americi, T. Leman (njegov sekretar) i sin Andrej Kraevski |
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| Year of publication | 1928 |
| Place of publication | Sao Paulo |
| Publisher | Foto Avenida |
| Source | |
| Signature | 385-5-32 |