00524nam a2200145Ia 4500 220216s9999 xx 000 0 und d Waidyanatha U P de S Zero-grzed pasture under immature Hevea rubber : Improved productivity of Panicum maximum and P. maximum + Pureria phaseoloides and their competition with Hevea Journal of the Rubber Research Institute of Sri Lanka 1982 17-24 Hevea rubber Stauss R Wijesinghe D S JS 72599 72599 0 0 0 8 MAIN MAIN 81 2021-12-17 Volume 60, Issue 0 2021-12-17 00:00:00 2022-02-16 JS