000 00365nam a2200133Ia 4500
008 220216s9999 xx 000 0 und d
100 _aKarunaratne S W
245 0 _aNatural rubber and the synthetics
260 _bRubber Research Institute of Sri Lanka Bulletin
_c1985
300 _a49-50
650 _aNatural rubber
650 _aSynthetic rubber
942 _cJS
999 _c63477
_d63477