Sari, N., Defiani, M., & Suriani, N. (2022). UTILIZATION OF ONION SKIN (Allium cepa L.) AND CHICKEN EGG SHELL TO INCREASE PRODUCTION OF MUSTARD PLANTS (Brassica rapa var. parachinensis L.). SIMBIOSIS, 10(1), 52-63. doi:10.24843/JSIMBIOSIS.2022.v10.i01.p05