Advanced training of teachers during the transition to universal secondary education (the 1960—70s)
... Фуксон Л. М. Общее образо-вание в Калининградской области (1951—1991) : монография. Калининград, 2006.
Zorkina L.
public education, institute of advanced training for teachers, ad¬vanced training, teaching staff
36-43
