Wasis, Basuki, and Angga Andika. 2017. “Growth Response of Mahagony Seedling (Swietenia Macrophylla King.) to Addition of Coconut Shell Charcoal and Compost on Ex-Sand Mining Site of West Java Province in Indonesia”. Archives of Agriculture and Environmental Science 2 (3):238-43. https://journals.aesacademy.org/index.php/aaes/article/view/02-03-018.