1985
Ernst Öpik, Estonian astronomer and astrophysicist (born 1893)
Ernst Öpik, Estonian astronomer and astrophysicist (born 1893)
Ernst Öpik, Estonian astronomer and astrophysicist (born 1893)
Estonian astronomer and astrophysicist (1893–1985)
Ernst Öpik, Estonian astronomer and astrophysicist (born 1893)
Ernst Öpik, Estonian astronomer and astrophysicist (born 1893)
Ernst Öpik, Estonian astronomer and astrophysicist (died 1985)
Ernst Öpik, Estonian astronomer and astrophysicist (died 1985)