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2 Jan 1950 Jahr - La teoria hace referencia a que un sistema es un conjunto de unidades independientes e interactuantes que forman un todo organizado
Zugefügt zum Band der Zeit:
especializacion
By
alexandra puentes
30 Sep 2019
0
0
701
Datum:
2 Jan 1950 Jahr
Jetzt
~ 75 years ago
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