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July 01 1989

A. Vibert Douglas

Helen Sawyer Hogg

Helen Sawyer Hogg

David Dunlap Observatory, University of Toronto

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Author & Article Information

Helen Sawyer Hogg

David Dunlap Observatory, University of Toronto

Physics Today 42 (7), 88–89 (1989);

https://doi.org/10.1063/1.2811101