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Palæontology in the U.S.S.R.. Nature 199, 1139 (1963). https://doi.org/10.1038/1991139d0
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DOI: https://doi.org/10.1038/1991139d0
Nature volume 199, page 1139 (1963)
Palæontology in the U.S.S.R.. Nature 199, 1139 (1963). https://doi.org/10.1038/1991139d0
Issue Date:
DOI: https://doi.org/10.1038/1991139d0