-Existencias: 1960 v. 1, no. 1-6; 1961 v. 2, no. 1-5; 1962 v. 3, no. 1, 3-5; 1963 v. 4, no. 1-5; 1964-1965 v. 5-6, no. 1-5; 1966-1967 v. 7-8, no. 1-5; 1968-1969 v. 9-10, no. 1-5; 1970-1971 v. 11-12, no. 1-5; 1972-1973 v. 13-14, no. 1-5; 1995 v. 36, no. 2; 1996 v. 37, no. 4