sponsored by the American Society for Testing Materials for the American Group for ISO/ TC-61. American Society for Testing Materials for the American Group for ISO/ TC-61. sponsored jointly by the American Society for Testing Materials and the Atomic Industrial Forum. sponsored by the American Society for Testing and Materials, New Orleans, La., 20-22 March, 1978. sponsored by the American Society for Testing and Materials, Valley Forge, Pa., 3-4 May, 1976. sponsored by American Society for Testing Materials Committee E-2 on Emission Spectroscopy.