Petronela Angela Ioja

Calatorie prin lumea fizicii - Clasa 8 - Probleme. Activitati practice - Cristian Presura, Daniela Berchez, Karoly-Jozsef Bogdan, Gabriela Deliu, Petronela Angela Ioja, Aneta-Aurelia Mihalcsik, Daniela Tepes

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