Ulloa Carmiol, A., & Goicoechea Carranza, C. (2013). Geotourism potential of underground sites in Costa Rica.
Chicago Style aipamenaUlloa Carmiol, Andrés, y Carlos Goicoechea Carranza. Geotourism Potential of Underground Sites in Costa Rica. 2013.
MLA aipamenaUlloa Carmiol, Andrés, y Carlos Goicoechea Carranza. Geotourism Potential of Underground Sites in Costa Rica. 2013.
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