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National Parks. Nature 216, 1159–1160 (1967). https://doi.org/10.1038/2161159c0
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DOI: https://doi.org/10.1038/2161159c0
Nature volume 216, pages 1159–1160 (1967)
National Parks. Nature 216, 1159–1160 (1967). https://doi.org/10.1038/2161159c0
Published:
Issue Date:
DOI: https://doi.org/10.1038/2161159c0