Carrión Mero, Paul Geotourism and local development based on geological and mining sites utilization, Zaruma-Portovelo, Ecuador - Basel MDPI Publishing June 2018 - 18 p. ilus. Subjects--Topical Terms: DESARROLLO SOSTENIBLEGEOTURISMOPATRIMONIO GEOLÓGICOPATRIMONIO MINERO Subjects--Geographic Terms: ECUADORPORTOVELOZARUMA