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2 gen 1960 anni - П.А. Завитаев

Descrizione:

вопросы формирования природоведческих представлений и понятий, организация работы на учебно-опытном участке; методика проведения предметных уроков.

Aggiunto al nastro di tempo:

Новая лента времени

ByАлена
25 set 2017

Data:

2 gen 1960 anni
Adesso
~ 64 years ago
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