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| Subject | English | Russian |
| gen. | passport number | номер паспорта (MT Alexander Demidov) |
| econ. | passport number | номер паспорта |
| gen. | passport number | номер и серия паспорта (This is your passport number. It is between six and nine alphanumeric characters, meaning it can be made up of numbers, letters or a combination of both. Alexander Demidov) |
| gen. | passport serial number | номер и серия паспорта (Is the passport serial number and the passport number the same thing? Yes they are basicly the same Alexander Demidov) |
| gen. | passport serial number | серия паспорта (в контексте "serial and individual number, or serial and unique number" Alexander Demidov) |