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| duotone (An image that uses only varying levels of a single color to display the image. For example, a black and white image uses varying levels of gray to display an image; a duotone would use varying levels of a color, such as green, to display that same image) | |||
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deux tons : 21 do fraz, 7 tematyki |
| Imigracja i obywatelstwo | 7 |
| Komunikacja | 2 |
| Pospolicie | 3 |
| Prawo karne | 1 |
| Przemysł | 5 |
| Technologia informacyjna | 2 |
| Włókiennictwo | 1 |