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Donald V. Helmberger

American seismologist

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✗ Works are not in the worldwide public domain until January 1, 2121
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Biography

Nationality
United States
Gender
male
Date of birth
January 23, 1938
- -
Occupation
seismologist
Place of birth
Perham
Country of birth
United States
Date of death
August 13, 2020 (aged 82)
- -

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