Geography lesson in high school number 19 of the city of Gorky.
Occupation in first class on September 1st in a secondary school in Riga.
Estonia.
Schoolchildren on excursions in the city of Tartu Observatory.
Struve Telescope.
Moscow region.
Pavlovsky Posad city.
Pioneers at work in the school orchard on the experimental plot.
Collect fruit.
Key words
Secondary education.
City.
Science.
Settlements.
Gardening.
Out of school education.