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1998 - 2001 гг. период окончания сроков региональных программ информатизации систем среднего образования, подготовленных 1998-1999 годах. (4 ene 1999 año – 10 agos 2001 año)

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ByKaterina
15 nov 2017
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fecha:

4 ene 1999 año
10 agos 2001 año
~ 2 years and 7 months
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