Arkadiĭ Dmitrievich Ursul

Identifiers

• Open LibraryOL5926449A

Top Subjects

• Astronautics (1)
• Exploration (1)
• Outer space (1)
• Astronautics -- Social aspects (1)
• Astronautics -- Philosophy (1)
• Dialectical materialism (1)
• Matter (1)