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environmental » environment (Expander búsqueda)
costs; » costos; (Expander búsqueda), costa; (Expander búsqueda)
environmental » environment (Expander búsqueda)
costs; » costos; (Expander búsqueda), costa; (Expander búsqueda)
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Descripción:
“... were found several problems to be solved, one of them concerning the high cost of the fuel used...”