000 00341nam a2200133Ia 4500
008 220216s9999 xx 000 0 und d
100 _aRyan A
245 0 _aPlastics as alternatives to rubber for proofing purposes
260 _bIRI Transactions
_c1944
300 _a77-80
650 _aPlastics
650 _aRubber proofing
942 _cJS
999 _c65194
_d65194