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    55 Ciencias de la tierra / Earth sciences and geology (1)
    63 Agricultura y tecnologías relacionadas / Agriculture (1)
    9 Geografía e Historia / History and geography (1)
    98 Historia general de América del Sur / History of ancient world; of specific continents, countries, localities; of extraterrestrial worlds (1)
    Agricultura (1)
    Agriculture (1)
    Altiplanicie Tunja-Sogamoso (1)
    Environmental History (1)
    Geografía histórica (1)
    Historia ambiental (1)