000 00293nam a2200121Ia 4500
008 220216s9999 xx 000 0 und d
245 0 _aSynthetic versus natural rubber
260 _bPlanter
_c1956
300 _a624-625
650 _aNatural rubber
650 _aSynthetic rubber
942 _cJS
999 _c70187
_d70187