Marpaung, M., Neneng, L. and Akhmadi, A. 2021. The Effect of Organic Biofertilizer on The Growth of Mustard Greens (Brassica Rapa Var. Parachinensis L) in Peat Soils as a Support for Practicum Material for Plant Growth and Development in Grade XII High School. GAMAPROIONUKLEUS. 2, 1 (May 2021), 33–44. DOI:https://doi.org/10.37304/jpmipa.v2i1.3688.