“The Effect of Fiber Length Variations on the Composite Fiber of Oil Palm Empty Bunches (OPEB) on Tensile Strength: Pengaruh Variasi Panjang Serat pada Komposit Serat Tandan Kosong Kelapa Sawit (TKKS) terhadap Kekuatan Tarik ”, PELS, vol. 3, Dec. 2022, doi: 10.21070/pels.v3i0.1324.