Holdings
11.1960, 257; 12.1961, 258,260,274-281; 13.1962, 282-290,292-305; 14.1963; 15.1964,330-337,339-347,350-353; 16.1965 - 17.1966; 18.1967, 402-410,412-418,420-422,424-425; 19.1968, 445,449; 22.1971, 498-499,501-504,506,510-513,516-517,520-521; 23.1972; 24.1973, 546-562,569; 25.1974, 570-573,575,578,581,592; 26.1975, 594-595,599; 27.1976, 637-638,641; 28.1977, 647; 29.1978, 674; 32.1981, 748-751,759,761; 34.1983, 795-804,806-809; 34.1984, 810-833; 36.1985, 834-847,850-855; 37.1986, 878; 43.1992, 1005-1008; 44.1993, 1012-1017; 45.1994, 1024-1027; 46.1995, 1028-1032,1034-1038; 47.1996 - 49.1998; 50.1999, 1076-1077,1082-1086; 51.2000, 1087-1098