Society of Aerospace Material & Process Engineers.National Symposium and exhibit (13th : 1968 : Sheraton Chicago Hotel-Chichago )：Engergistic materials- energy to the benefit of aerospace and mankind.s. n.,1968.
Society of Aerospace Material & Process Engineers.National Symposium and exhibit (14th : 1968 : Cocoa Beach, Florida )：Advanced techniques for material investigation and fabrication.s. n.,1968.
Society of Aerospace Material & Process Engineers.National Symposium and exhibit (14th : 1968 : Cocoa Beach, Florida )：Advanced techniques for material investigation and fabrication.s. n.,1968.
