00395nam a2200097Ia 4500008004100000100001900041245011800060260009900178300001200277650000800289220216s9999    xx            000 0 und d  aBeng Goh Cheng 0aCommercial experience with controlled upward tapping: Comparison of continuous with yearly panel-charging systems  bProceedings of the Rubber Research Institute of Malaysia, Rubber Growers Conference 1986c1986  a144-173  aCUT