| Covers listed |
|
| 1969: | Vol 10 # 1January/February, Vol 10 # 2March/April, Vol 10 # 3May/June, Vol 10 # 4/5July-October, Vol 10 # 6November/December, |
| 1970: | Vol 11 # 1January/February, Vol 11 # 2March/April, Vol 11 # 3May/June, Vol 11 # 4/5July-October, Vol 11 # 6November/December, |
| 1971: | Vol 12 # 1, Vol 12 # 2, Vol 12 # 3, Vol 12 # 4, |
| 1972: | Vol 13 # 1Spring, Vol 13 # 2Summer, Vol 13 # 3Autumn, Vol 13 # 4Winter, |
| 1973: | Vol 14 No 1-2Spring, Vol 14 # 3Autumn, Vol 14 # 4Winter, |
| 1974: | Vol 15 # 1Spring, Vol 15 # 2Summer, Vol 15 # 3Autumn, Vol 15 # 4Winter, |
| 1975: | Vol 16 # 1, Vol 16 # 2, Vol 16 # 3, Vol 16 # 4, |
| 1976: | Vol 17 # 1Spring, Vol 17 # 2Summer, Vol 17 # 3Autumn, Vol 17 # 4Winter, |
| 1977: | Vol 18 # 1Spring, Vol 18 # 2Summer, Vol 18 # 3Autumn, Vol 18 # 4Winter, |
| 1978: | Vol 19 # 1Spring, Vol 19 # 2Summer, Vol 19 # 3Autumn, Vol 19 # 4Winter, |
| 1979: | Vol 20 # 1Spring, Vol 20 # 2Summer, Vol 20 # 3/4Autumn/Winter, |
| 1980: | Vol 21 # 1Spring, Vol 21 # 2Summer, Vol 21 # 3Fall, Vol 21 # 4Winter, |
| 1981: | Vol 22 # 1, Vol 22 # 2, Vol 22 # 3, Vol 22 # 4, |
| 1982: | Vol 23 # 1, Vol 23 # 2, Vol 23 # 3/4, Vol 23 # 5, |
| 1983: | Vol 24 # 1, Vol 24 # 2March/April, Vol 24 # 3, Vol 24 # 4/5July-October, November/December, |
| 1984: | Vol 25 # 1, Vol 25 # 2 - March/April, Vol 25 # 3, Vol 25 # 4/5 - July-October, Vol 25 # 6, |
| 1985: | Vol 26 # 1, Vol 26 # 2, Vol 26 # 3/4May-August, Vol 26 # 5September/October, Vol 26 # 16, |
| 1986: | Vol 27 # 1, Vol 27 # 2, Vol 27 # 3/4, Vol 27 # 5September/October, Vol 27 # 6, |
| 1987: | Vol 28 # 1Winter, Vol 28 # 2Spring, Vol 28 # 3Summer, Vol 28 # 4Autumn, |
| 1988: | Vol 29 # 1Winter, Vol 29 # 2Spring, Vol 29 # 3Summer, Vol 29 # 4Autumn, |
| 1989: | Vol 30 # 1/2, Vol 30 # 3, Vol 30 # 4, |
| 1990: | Vol 31 # 1, Vol 31 # 2, Vol 31 # 3, Vol 31 # 4, |
| 1991: | Vol 32 # 1, Vol 32 # 2, Vol 32 # 3, Vol 32 # 4, |
| 1992: | Vol 33 # 1Spring, Vol 33 # 2Summer, Vol 33 # 3Autumn, Vol 33 # 4Winter, |
| 1993: | Vol 34 # 1Spring, Vol 34 # 2Summer, Vol 34 # 3Autumn, Vol 34 # 4Winter, |
| 1994: | Vol 35 # 1, Vol 35 # 2, Vol 35 # 3, Vol 35 # 4 - Winter, |
| 1995: | Vol 36 # 1, Vol 36 # 2, Vol 36 # 3, Vol 36 # 4, |
| 1996: | Vol 37 # 1Spring, Vol 37 # 2Summer, Vol 37 # 3Autumn, Vol 37 # 4Winter, |
| 1997: | Vol 38 # 1Spring, Vol 38 # 2Summer, Vol 38 # 3Autumn, Vol 38 # 4Winter, |
| 1998: | Vol 39 # 1Spring, Vol 39 # 2Summer, Vol 39 # 3Autumn, Vol 39 # 4Winter, |
| 1999: | Vol 40 # 1, Vol 40 # 2, Vol 40 # 3, Vol 40 # 4, |
| 2000: | Vol 41 # 1 - Spring, Vol 41 # 2, Vol 41 # 3, Vol 41 # 4, |
| 2001: | Vol 42 # 1, Vol 42 # 2, Vol 42 # 3, Vol 42 # 4, |
| 2002: | Vol 43 # 1, Vol 43 # 2 - Summer, Vol 43 # 3, Vol 43 # 4, |
| 2003: | Vol 44 # 1, Vol 44 # 2, Vol 44 # 3, Vol 44 # 4, |
| 2004: | Vol 45 # 1, Vol 45 # 2, Vol 45 # 3, Vol 45 # 4, |
| 2005: | Vol 46 # 1, Vol 46 # 2, Vol 46 # 3, Vol 46 # 4, |
| 2006: | Vol 47 # 1, Vol 47 # 2, Vol 47 # 3, Vol 47 # 4, |
| 2007: | Vol 48 # 1 - Spring, Vol 48 # 2 - Summer, Vol 48 # 3 - Autumn, Vol 48 # 4 - Wimter, |
| 2008: | Vol 49 # 1 - Spring, Vol 49 # 2 - Summer, Vol 49 # 3 - Autumn, Vol 49 # 4 - Winter, |
| 2009: | Vol 50 # 1 - Spring, Vol 50 # 2 - Summer, Vol 50 # 3 - Autumn, Vol 50 # 4 - Winter, |
| 2010: | Vol 51 # 1 - Spring, Vol 51 # 2 - Summer, Vol 51 # 3 - Autumn, Vol 51 # 4 - Winter, |
| 2011: | Vol 52 # 1 - Spring, Vol 52 # 2 - Summer, Vol 52 # 3 - Autumn, Vol 52 # 4 - Winter, |
| 2012: | Vol 53 # 1Spring, Vol 53 # 2Summer, |
| 2013: | Vol 54 No 2Summer, |
