00371nam a2200121Ia 4500008004100000100002100041245009500062260003200157300001000189650002300199650001000222700001700232220216s9999    xx            000 0 und d  aRamakrishnan T S 0aReport of the first year of trials in increasing yield from existing plantations of rubber  bRubber Board Bulletinc1962  a79-87  aRubber cultivation  aYield  aPillai P N R