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| 080 | _a05.03.04 L864 | ||
| 100 | _aLópez Ospina, Gustavo | ||
| 245 | _aToward building a social pact that orients and ensures a sustainable future with solid social protection for all 2005-2050 | ||
| 260 |
_bUNESCO _aQuitoEC _c2004 |
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| 300 | _a92 p. | ||
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