File:Sistematrienal.png
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![File:Sistematrienal.png](https://upload.wikimedia.org/wikipedia/commons/thumb/6/64/Sistematrienal.png/800px-Sistematrienal.png?20090328175709)
Size of this preview: 800 × 443 pixels. Other resolutions: 320 × 177 pixels | 640 × 355 pixels | 897 × 497 pixels.
Original file (897 × 497 pixels, file size: 31 KB, MIME type: image/png)