000 00289nam a2200109Ia 4500
008 220214s9999 xx 000 0 und d
100 _aBanerjee B.M.
245 0 _aCyclisation of cis-polyisoprene (natural Hevea rubber)
260 _bPopular plastics
_c1969
300 _a25-35
942 _cRE
999 _c45584
_d45584