Vorontsov-Velyaminov B.,  Dagaev M.,  Zasov A. i dr. Metodika prepodavaniya astronomii v sredney shkole./B. Vorontsov-Velyaminov, M. Dagaev, A. Zasov et al. Methodology of teaching astronomy in secondary schools. In Russian - landofmagazines.com

TransliterationVorontsov-Velyaminov B., Dagaev M., Zasov A. i dr. Metodika prepodavaniya astronomii v sredney shkole.

In EnglishB. Vorontsov-Velyaminov, M. Dagaev, A. Zasov et al. Methodology of teaching astronomy in secondary schools. In Russian

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