Holdings
1.1948,1.6/7.10.12/13; 2.1949,2.8/9.11/12.13/14.16; 7.1954,5-10.16-18.21; 8.1955,1/2-4.6.9; 9.1956,12.20.21; 10.1957,4.5.16.19; 11.1958,20; 13.1960 - 15.1962; 16.1963,3-17.19.20; 17.1964 - 19.1966,11; 20.1967,1.2.11.12; 21.1968,1-5.7-12; 22.1969 - 24.1971; 25.1972,2 - 26.1973,3; 26.1973,5.9-11; 27.1974,1.2.5.9.11.12