ANNUAL BOOK OF ASTM STANDARDS, 1981, PART 41: GENERAL TEST METHODS, NONMETAL; STATISTICAL METHODS; SPACE SIMULATION; PARTICLE SIZE MEASUREMENT; LABORATORY APPARATUS; DURABILITY OF NONMETALLIC MATERIALS; RESOURCE RECOVERY; SOLAR ENERGY CONVERSION; COMPATIBILITY AND SENSITIVITY OF MATERIALS IN OXYGEN ENRICHED ATMOSPHERES; METRIC PRACTICE.