Effects of Gibberellin (GA3) Concentration and Immersion Time of Various Cuttings On The Germination of Mangosteen Seeds (Garcinia Mangostana L)MBAHAN BENIH MANGGIS (Garcinia Mangostana L). Petrop 2019, 3 (3), 235-248. https://doi.org/10.32734/jopt.v3i3.2983.