TY - BOOK ED - American Society for Metals. TI - Impurities and imperfections: a seminar on impurities and imperfections held during the Thirty-sixth National Metal Congress and Exposition, Chicago, October 30 to November 5, 1955 [i.e. 1954] sponsored by the American Society for Metals U1 - 669 23 PY - 1955/// CY - Ohio : PB - American Society for Metals KW - Physical metallurgy KW - Metals KW - Analysis N1 - Includes bibliographies ER -