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X-ray Astronomy's Big Step Forward. Nature 230, 426 (1971). https://doi.org/10.1038/230426a0
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DOI: https://doi.org/10.1038/230426a0
Nature volume 230, page 426 (1971)
X-ray Astronomy's Big Step Forward. Nature 230, 426 (1971). https://doi.org/10.1038/230426a0
Issue Date:
DOI: https://doi.org/10.1038/230426a0