Fenty Maimunah Simbolon, Murni Sari Rahayu, Yayuk Purwaningrum, and Muhamad Zepri. “THE EFFECT OF PROVISION OF CHICKEN MANURE AND N-FERTILIZER ON THE GROWTH OF PAKCOY PLANTS (Brassica Rapa L.) USING THE PARALON VERTICULTURE SYSTEM”. International Journal of Educational Research Excellence (IJERE) (December 30, 2019): 8–17. Accessed July 3, 2024. https://ejournal.ipinternasional.com/index.php/ijere/article/view/649.