Metallography, a practical tool for correlating the structure and properties of materials : a symposium presented at the seventy-sixth annual meeting, American Society for Testing and Materials, Philadelphia, Pa., 25-26 June 1973 / Halle Abrams and G. N. Maniar, symposium cochairmen ; [Committee E-4 on Metallography sponsored the symposium]. (ASTM special technical publication ; 557)