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MARTIN, J. School Geography. Nature 112, 809–810 (1923). https://doi.org/10.1038/112809a0
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DOI: https://doi.org/10.1038/112809a0
Nature volume 112, pages 809–810 (1923)
MARTIN, J. School Geography. Nature 112, 809–810 (1923). https://doi.org/10.1038/112809a0
Issue Date:
DOI: https://doi.org/10.1038/112809a0