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| карта магнитных склонений | |||
| карта склонений | |||
| карта вариаций | |||
| поле дисперсий; таблица отклонений | |||
| карта изогон; карта магнитного склонения | |||
| variation chart: 3 phrases in 3 subjects |
| Nautical | 1 |
| Navigation | 1 |
| Quality control and standards | 1 |
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