Authors
Junaidi
Sungei Putih Research Centre, Indonesian Rubber Research Institute, Medan, Indonesia
Andi Wijaya
Sungei Putih Research Centre, Indonesian Rubber Research Institute, Medan, Indonesia
Arief Rachmawan
Sungei Putih Research Centre, Indonesian Rubber Research Institute, Medan, Indonesia
Mochlisin Andriyanto
Sungei Putih Research Centre, Indonesian Rubber Research Institute, Medan, Indonesia