00525nam a2200157Ia 4500008004100000100002300041245005800064260005800122300001000180650001700190650001900207650001400226942000700240999001700247952010300264220216s9999    xx            000 0 und d  aTillekeratne L M K 0aSome problems of block rubber production in Sri Lanka  bRubber Research Institute of Sri Lanka Bulletinc1977  a17-18  aBlock rubber  aNatural rubber  aSri Lanka  cJS  c69032d69032  00104078aMAINbMAINc80d2021-12-17hVolume 12, Issue 1l0r2021-12-17 00:00:00w2022-02-16yJS