Relawati, Rahayu, Aniek Iriany, Indah Prihartini, & Mona Fairuz Ramli.
" Farmers’ Willingness to Pay Bio-Activators to Maintain Soil Fertility." <em>SOCA: Jurnal Sosial Ekonomi Pertanian</em> [Online], 16.3 (2022): 234 - 245. Web.  3 May. 2024