peoplepill id: hetty-orrilla-ballard
HOB
United States of America
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Hetty Orrilla Ballard
American geologist

Hetty Orrilla Ballard

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Hetty Orrilla Ballard is in following lists

By field of work

Notable American scientists

Gender:Female, Born in:Years 1850 to 1899

By work and/or country

Notable American Geologists

Gender:Female, Born in:Years 1850 to 1899
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Hetty Orrilla Ballard
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