000 00249nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _aNR:0161972/73
_bACS
245 0 _aBibliography: Elastomers for heat resistance
260 _aACS
_b1977
942 _cBK
999 _c43458
_d43458