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A Quasar on the Doorstep ?. Nature 223, 666 (1969). https://doi.org/10.1038/223666a0
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DOI: https://doi.org/10.1038/223666a0
Nature volume 223, page 666 (1969)
A Quasar on the Doorstep ?. Nature 223, 666 (1969). https://doi.org/10.1038/223666a0
Issue Date:
DOI: https://doi.org/10.1038/223666a0