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The world of science: Astronomy
A twenty-five volume encyclopedia of scientific subjects, designed for eight- to twelve-year-olds. One volume is entirely devoted to projects.
- "A twenty-five volume encyclopedia of scientific subjects, designed for eight- to twelve-year-olds. One volume is entirely devoted to projects."@en
- "Dictionaries"@en
- "Juvenile works"@en
- "The world of science: Astronomy"@en