Citations are generated automatically from bibliographic data as a convenience and may not be complete or accurate.
National Institute of Standards and Technology (NIST), Commerce Department. "Letter Circular 142: The Principal Requirements of the Portland Cement Specifications of Various Countries". Government. Commerce Department, August 17, 1921. https://www.govinfo.gov/app/details/GOVPUB-C13-e3314140fe570650e98e04afe251405d
National Institute of Standards and Technology (NIST), Commerce Department. (1921, August 17). Letter Circular 142: The Principal Requirements of the Portland Cement Specifications of Various Countries. [Government]. Commerce Department. https://www.govinfo.gov/app/details/GOVPUB-C13-e3314140fe570650e98e04afe251405d
National Institute of Standards and Technology (NIST), Commerce Department. Letter Circular 142: The Principal Requirements of the Portland Cement Specifications of Various Countries. Commerce Department, (17 Aug 1921), https://www.govinfo.gov/app/details/GOVPUB-C13-e3314140fe570650e98e04afe251405d
National Institute of Standards and Technology (NIST), Commerce Department, Letter Circular 142, GovInfo, (August 17, 1921), https://www.govinfo.gov/app/details/GOVPUB-C13-e3314140fe570650e98e04afe251405d