Kandungan NPK Ekstrak Keong Mas (Pomacea canaliculata L.) yang Difermentasi pada Beberapa Konsentrasi EM4 (Effective Microorganism 4): NPK Content of Golden Snail Extract Fermented at Some EM4 (Effective Microorganism 4) Concentrations. Jurnal Ilmiah Inovasi, v. 24, n. 2, p. 127–130, 19 Jun.2024.