Holdings
44.1953,1-2; 47.1956,1; 49.1958,3; 52.1961,2,4; 54.1963,1,4; 55.1964,1,3-4; 56.1965,2-4; 57.1966 - 58,1967,1-2,4; 59.1968,1-2,4; 60.1969,4; 61.1970,3-4; 62,1971,1; 63.1972,1-3; 64.1973,1-2,4; 65.1974 - 79.1988; 80.1989,1,3-4; 81.1990,1-2; 83.1992 - 86.1995; 87.1996,1,3-4; 88.1997 - 102.2011,1; 103.2012 -