00547nam a2200157Ia 4500008004100000100002300041245006400064260006500128300001000193650001900203650002100222700002100243942000700264999001700271952010100288220216s9999    xx            000 0 und d  aTillekeratne L M K 0aNatural rubber: A more safer material than synthetic rubber  bBulletin of the Rubber Research Institute of Sri Lankac1997  a6-Jan  aNatural rubber  aSynthetic rubber  ade Silva Karnika  cJS  c63662d63662  00104078aMAINbMAINc81d2021-12-17hVolume 35, Issuel0r2021-12-17 00:00:00w2022-02-16yJS