Let's Have Clean Water [Kit]
Description:
Kit issued by the U.S. National Bureau of Standards containing materials regarding conversion to the metric system of measurement. The kit includes a letter of introduction; an order form; two plastic cards printed with rulers and conversion information; and four booklets that discuss how the metric system is different from the English system of measurement, why America should switch, and reference materials for converting.
Date:
1953~
Creator:
United States. Public Health Service.
Item Type:
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Partner:
UNT Libraries Government Documents Department