000 00286nam a2200121Ia 4500
008 220216s9999 xx 000 0 und d
100 _aDefries R
245 0 _aUnburstable rubber balls
260 _bIRI Transactions
_c1931
300 _a475-486
650 _aRubber balls
942 _cJS
999 _c71735
_d71735