peoplepill id: helen-pettit-knaflich
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United States of America
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Helen Pettit Knaflich
American astronomer

Helen Pettit Knaflich

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By field of work

Notable American scientists

Gender:Female, Born in:Years 1900 to 1929

By work and/or country

Notable American Astronomers

Gender:Female, Born in:Years 1900 to 1929
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Helen Pettit Knaflich
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