AKANWA O, Angela; ONWUEMESI E, Faustina; CHUKWURAH O, Gladys; OFFICHA C, Maurice. Effects of Open Cast Quarrying Technique on Vegetation Cover and the Environment in South-Eastern Nigeria. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 21, n. 1, p. 227–240, 2016. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/1746. Acesso em: 16 sep. 2025.