00421nam a2200121Ia 4500008004100000100001700041245011700058260005500175300001000230650001400240650002500254700002000279220216s9999    xx            000 0 und d  aPiyadasa K A 0aQuick method for the determination of ammonia content in natural rubber latex : A modification of the B S method  bRubber Research Institute of Ceylon Bulletinc1971  a19-23  aBS method  aNatural rubber latex  aKarunaratne S W