Elis Strömgren's son was the astronomer Bengt Strömgren, who succeeded his father in Copenhagen in 1940.
Elis Strömgren 's son was the astronomer Bengt Strömgren , who succeeded his father in Copenhagen in 1940 .
Who is the offspring of Elis Strömgren?
Who is the offspring of Elis Strömgren ?
Bengt Strömgren
Bengt Strömgren