Riffo Rosas, M., Castro Osorio, P., Retamales Villa, C. and Malermo Guajardo, L. 2009. Fisical and environmental conditions of the new rural settlement spacial localization: Maule region. Investigaciones Geográficas. 41 (Jan. 2009), Pág. 83–109. DOI:https://doi.org/10.5354/0719-5370.2009.21900.