Purwaningrum, Y., Asbur, Y., Satriawan, H., Sari, M., & Nurhayati. (2023). Combination of exploitation systems to optimize yield of GT1 clone in smallholder rubber (Hevea brasiliensis) plantation in Sumatera Utara, Indonesia. Plant Science Today, 10(4). https://doi.org/10.14719/pst.2491