Hashemi, H., Jafari, H. and Ahmadian, M.A. 2020. The Role of Services and Facilities in Population Sustainability of Rural Settlements (Case Study: The Villages in Central Region of Birjand city). Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental. 24, (Apr. 2020), e34. DOI:https://doi.org/10.5902/2236117043411.