section:
Astronomy
title:
Astronomiya
author:
Boris Vorontsov-Veliaminov
language:
Russian
year:
1963
publisher:
Prosveshchenie Publishing House
section:
Astronomy
title:
Astronomiya
author:
Boris Vorontsov-Veliaminov
language:
Russian
year:
1963
publisher:
Prosveshchenie Publishing House
