/Editorial/ Miguel Laufer NATURAL SCIENCES AND SOCIAL SCIENCES 612 /Articles/ Elías Pizarro Pizarro CHILEAN STATE IN TACNA AND ARICA: EXPERIENCE BACKGROUND OF AN OCCUPATION (1880-1914) (in Spanish) 614 Alfonso Díaz Aguad and Raúl Bustos González POLITICAL AND ECONOMIC EFFECTS OF THE 1929 TREATY BETWEEN CHILE AND PERU IN THE CITY OF ARICA (1930-1952) (en […]