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Educational Films on World Resources. Nature 165, 19 (1950). https://doi.org/10.1038/165019b0
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DOI: https://doi.org/10.1038/165019b0
Nature volume 165, page 19 (1950)
Educational Films on World Resources. Nature 165, 19 (1950). https://doi.org/10.1038/165019b0
Issue Date:
DOI: https://doi.org/10.1038/165019b0