BRASIL RESUMEN Guilherme M. Pereira TRACE ELEMENTS AND OXY-PAH IN SOUTH AMERICAN URBAN SITES SÃO PAULO, LIMA E MEDELLIN Publicado el 22/01/2018 por Pedro Juan Expósito Landa BRASIL RESUMEN Guilherme M. Pereira TRACE ELEMENTS AND OXY-PAH IN SOUTH AMERICAN URBAN SITES SÃO PAULO, LIMA E MEDELLIN