00297nam a2200085Ia 4500008004100000082002500041245008900066260002000155490003600175220204s9999    xx            000 0 und d  a678.074:678.019bPRE 0aPredicting aging of elastomers: Papers presented at 136th ACS meeting, Detorit, 1989  aOhiobACSc1989  aACS Educational symposium No.23