IEEE spectrum (Online)

12 to 55

12 to 52

40 to 48

Preserved : 1964: 1(1)

Preserved : 1965: 2(1-7), 1966: 3(1-12), 1967: 4(1-12), 1968: 5(1-12), 1969: 6(1-12), 1970: 7(1-12), 1971: 8(2-12), 1972: 9(1-12), 1973: 10(1-12)

Preserved : 1976: 13(11-12)

Preserved : 1980: 17(1-7)

Preserved : 1988: 25(1-13), 1989: 26(1-12), 1990: 27(1-12), 1991: 28(1-12), 1992: 29(1-12), 1993: 30(1-12), 1994: 31(1-12), 1995: 32(1-12), 1996: 33(1-12), 1997: 34(1-12), 1998: 35(1-12), 1999: 36(1-12), 2000: 37(1-12), 2001: 38(1-12), 2002: 39(1-12), 2003: 40(1-12), 2004: 41(1-12), 2005: 42(1-12), 2006: 43(1-12), 2007: 44(1-7, 7, Part s, 8-12), 2008: 45(1-12), 2009: 46(1-12), 2010: 47(1-12), 2011: 48(1-12), 2012: 49(1-12), 2013: 50(2, 8, 10-12), 2014: 51(1-12), 2015: 52(1-12), 2016: 53(1-12), 2017: 54(1-12), 2018: 55(1-12), 2019: 56(1-12), 2020: 57(1-12), 2021: 58(1-12), 2022: 59(1-12), 2023: 60(1-12), 2024: 61(1-4)

Preserved : 1 (1 to 12); 2 (1 to 12); 3 (1 to 12); 4 (1 to 12); 5 (, 1 to 12); 6 (1 to 12); 7 (1 to 12); 8 (1 to 12); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 13); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (, 1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1 to 12); 50 (1 to 12); 51 (1 to 12); 52 (1 to 12); 53 (1 to 12); 54 (1 to 12); 55 (1 to 12); 56 (1 to 8 to 10 to 12); 57 (01, 2 to 12); 58 (1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (01, 2, 3)