sponsored by ASTM Committee E-24 on Fracture Testing of Metals, American Society for Testing and Materials, Atlanta, Ga., 16-18 Nov. 1977 ; J. D. Landes, J. A. Begley, G. A. Clarke, editors. sponsored by ASTM Committee E-24 on Fracture Testing of Metals, American Society for Testing and Materials, Chicago, Ill., 28-30 June, 1976 ; G. T. Hahn and M. F. Kanninen, editors. sponsored by ASTM Committee E-9 on Fatigue, American Society for Testing and Materials, Atlanta, Ga., 14-15 Nov. 1977 ; P. R. Abelkis and J. M. Potter, editors. sponsored by ASTM Committee E-24 on Fracture Testing, American Society for Testing and Materials, San Diego, Calif., 13-14 Oct. 1977. ; J. B. Chang, editor. a symposium sponsored by ASTM Committee E-24 on Fracture Testing of Metals, American Society for Testing and Materials, Philadelphia, Pa., 23-25 Aug., 1976 ; J. M. Barsom, symposium chairman. sponsored by ASTM Committee E-35 on Pesticides, American Society for Testing and Materials, Cleveland, Ohio, 31 Oct.-1 Nov. 1977 ; L.L. Marking, R.A. Kimerle, editors. sponsored by ASTM Committee E33 on Environmental Acoustics, American Society for Testing and Materials, Kansas City, Mo., 24-26 May 1978. ; R. J. Peppin, C. W. Rodman, editors. sponsored by ASTM Committee G-2 on Erosion and Wear, American Society for Testing and Materials, Vail, Colo., 24-26 Oct. 1977 ; W. F. Adler, editor. sponsored by ASTM Committee E-42 on Surface Analysis, American Society for Testing and Materials, Cleveland, Ohio, 28 Feb.-1 March, 1978 ; T. L. Barr, L. E. Davis, editors. sponsored by ASTM Committee D02 on Petroleum Products and Lubricants, American Society for Testing and Materials, Dallas, Tex., 3-8 Dec. 1977 ; W. G. Dukek and K. H. Strauss, editors.