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| Materia |
|---|
| Xenofobia [2] |
| Xenophobia [2] |
| XIX Século [1] |
| Yaroshevsky, Mijail Efimovich, 1870-? [1] |
| Yarrowia [1] |
| Yeasts [2] |
| Yerba mate [2] |
| Yodo [1] |
| Youth [33] |
| Youth employment [1] |
| Youth organizations [1] |
| YouTube [1] |
| Youtubers [2] |
| YPF [2] |
| Yrigoyen, Hipólito, 1852-1933 [2] |
| Yungas [1] |
| Zanatta, Loris [1] |
| Zanello [1] |
| Zarowsky, Mariano [1] |
| Zárate (Argentina) [1] |