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. 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-35 on Pesticides, American Society for Testing and Materials, New Orleans, La., 17 Oct. 1978 ; E. E. Kenaga, editor. sponsored by ASTM Committee D 19 on Water, American Society for Testing and Materials, Denver, Colo., 19-20 June 1978. ; C. E. Van Hall, editor. 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 F-1 on Electronics, American Society for Testing and Materials, San Diego, Calif., 15-16 Feb., 1979 ; R.D. Westbrook, symposium chairman. 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-28 on Mechanical Testing, American Siciety for Testing and Materials ; J. R. Newby and B. A. Niemeier, editors. sponsored by ASTM Committees E-9 on Fatigue and E-24 on Fracture Testing, American Society for Testing and Materials, Pittsburgh, Pa., 29-30 Oct., 1979 ; S.J. Hudak, Jr., and R.J. Bucci, editors. sponsored by ASTM Committee E-28 on Mechanical Testing, American Society for Testing and Materials, Kansas City, Mo., 24, 25 May 1978.