Ismail Marzuki, T. Irmansyah and Sitepu, F. 2022. Application of Natural Growth Regulator on Viability of Soursop Seeds (Annona Muricata Linn.). Jurnal Online PERTANIAN TROPIK. 8, 2 (Jan. 2022), 135-143. DOI:https://doi.org/10.32734/jpt.v8i2.8077.