Hakim, Muhammad Irfan, and Andriani Eko P. “The Effect of Liquid Organic Fertilizer Concentration on Growth and Production of Pakcoy Mustard (Brassica Rapa L.): Pengaruh Konsentrasi Pupuk Organik Cair Terhadap Pertumbuhan Dan Produksi Sawi Pakcoy (Brassica Rapa L.)”. Procedia of Engineering and Life Science, vol. 1, no. 1, Mar. 2021, doi:10.21070/pels.v1i1.757.