00320nam a2200097Ia 4500008004100000245009900041260000900140500003700149650001900186650001700205220217s9999    xx            000 0 und d 0aMethods of test for natural rubber. Part IV. Determination of total copper. (Second Revision).  c1988  aStandard number: IS 3660 Part IV  aNatural rubber  aTotal copper