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Rich, V. Soviets rap birch-sap tappers. Nature 273, 90 (1978). https://doi.org/10.1038/273090b0
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DOI: https://doi.org/10.1038/273090b0
Nature volume 273, page 90 (1978)
Rich, V. Soviets rap birch-sap tappers. Nature 273, 90 (1978). https://doi.org/10.1038/273090b0
Issue Date:
DOI: https://doi.org/10.1038/273090b0