Sirait, Bilter, 		Silalahi, Emeraldo, 		Simatupang, Ulina, AND 		Manurung, Agnes.
" EFEK PEMBERIAN NPK DAN BIOTRENT SAWIT TERHADAP PERTUMBUHAN  BIBIT  KELAPA SAWIT" <em>Jurnal Darma Agung</em> [Online], Volume 32 Number 5 (31 October 2024)