• 2 Videos, Slides, Films

• 2 Study and teaching
• 1 Chemical elements
• 1 Chemistry
• 1 Chemistry, Physical and theoretical
• 1 Experiments
• 1 Galaxies
• 1 Hubble, Edwin, 1889-1953
• 1 Inorganic compounds
• 1 Mendeleyev, Dmitry Ivanovich, 1834-1907
• 1 Organic compounds
• 1 Stars

• 2 Films Media Group
• 2 Films for the Humanities & Sciences (Firm)

• 2 English

• 1 Outer space
• 1 Russia

Limit year range