Existencias
1950, No. 8-11 1951, No. 12 1951, No. 14-15 1952, No. 16-19 1953, No. 20-21 1953, No. 23-25 1955, No. 26-28 1956, No. 29-30 1957, No. 31 1958, No. 33 1968, No. 40-43 1969, No. 45-47 1969, No. 49 1970, No. 53-55 1971, No. 57-61 1972, No. 63-67 1973, No. 68-73
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