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Technical Education Abstracts . Nature 193, 222 (1962). https://doi.org/10.1038/193222a0
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DOI: https://doi.org/10.1038/193222a0
Nature volume 193, page 222 (1962)
Technical Education Abstracts . Nature 193, 222 (1962). https://doi.org/10.1038/193222a0
Issue Date:
DOI: https://doi.org/10.1038/193222a0