1873
Ejnar Hertzsprung, Danish chemist and astronomer (died 1967)
Ejnar Hertzsprung, Danish chemist and astronomer (died 1967)
Ejnar Hertzsprung, Danish chemist and astronomer (died 1967)
Danish chemist and astronomer (1873–1967)
Ejnar Hertzsprung, Danish chemist and astronomer (died 1967)
Ejnar Hertzsprung, Danish chemist and astronomer (died 1967)