File:CH-5 weekly-working-time-with-clock RYB17.png
CH-5_weekly-working-time-with-clock_RYB17.png (316 × 532 pixels, file size: 16 KB, MIME type: image/png)
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CH-5_weekly-working-time-with-clock_RYB17.png (316 × 532 pixels, file size: 16 KB, MIME type: image/png)
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