External galaxies and quasi-stellar objects. Ed. by David S. Evans. Assisted by Derek Wills and Beverley J. Wills.

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External galaxies and quasi-stellar objects. Ed. by David S. Evans. Assisted by Derek Wills and Beverley J. Wills.

Galaxies -- Congresses.

Astrophysics -- Congresses.

Evans, David S. (David Stanley), 1916-2004

Wills, Derek,

Wills, Beverley J.,

International Astronomical Union