Refractory Metal Alloys Metallurgy and Technology: Proceedings of a Symposium on Metallurgy and Technology of Refractory Metals held in Washington, D.C., April 25–26, 1968. Sponsored by the Refractory Metals Committee, Institute of Metals Division, The Metallurgical Society of AIME and the National Aeronautics and Space Administration, Washington, D.C.