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izlaidumi no Helmut A. Abt

Cover for Helmut A. Abt · Life of an Astronomer (Book) (2023)

Life of an Astronomer (2023)

Cover for Helmut A. Abt · American Astronomical Society Centennial Issue of the Astrophysical Journal (Paperback Book) (2001)

American Astronomical Society Ce... (2001)

Cover for Helmut A. Abt · American Astronomical Society Centennial Issue of the Astrophysical Journal (Hardcover Book) (2000)

American Astronomical Society Ce... (2000)