Held:

• Volume II, Number 2
• Volume VIII, Numbers 10, 12
• Volume X, Numbers 4–12
• Volume XI, Numbers 1–4, 6–12
• Volume XII, Numbers 1–2, 7–8, 10–12
• Volume XIII, Numbers 1–5, 9
• Volume XV, Numbers 3–9, 12
• Volume XVI, Numbers 1–3
• Volume XVIII, Number 3
• Volume XX, Number 9
• Volume XXI, Number 8
• Volume XVI, Number 3

Known Missing:

• Volume I, all issues (dates unclear)
• Volume II, Numbers 1, 3–12 (dates unclear)
• Volumes III – VII, all issues (dates unclear – September 1982)
• Volume VIII, Numbers 1–9 (October 1982 – June 1983)
• Volume VIII, Number 11 (August 1983)
• Volume IX, Numbers 1–12 (October 1983 – September 1984)
• Volume X, Numbers 1–3 (October–December 1984)
• Volume XI, Number 5 (February 1986)
• Volume XII, Numbers 3–6 (December 1986 – March 1987)
• Volume XII, Number 9 (June 1987)
• Volume XIII, Numbers 6–8 (March–May 1988)
• Volume XIII, Numbers 10–12 (July–September 1988)
• Volume XIV, all issues (October 1988 – September 1989)
• Volume XV, Numbers 1–2 (October–November 1989)
• Volume XV, Numbers 10–11 (July–August 1990)
• Volume XVI, Numbers 4–12 (January–September 1991)
• Volume XVII, all issues (October 1991 – September 1992)
• Volume XVIII, Numbers 1–2 (October–November 1992)
• Volume XVIII, Numbers 4–12 (January–September 1993)
• Volume XIX, all issues (October 1993 – September 1994)
• Volume XX, Numbers 1–8 (October 1994 – May 1995)
• Volume XX, Numbers 10–12 (July 1995 – September 1995)
• Volume XXI, Numbers 1–7 (October 1995 – April 1996)
• Volume XXI, Numbers 9–12 (June 1996 – September 1996)
• Volume XXII – XXV (October 1996 – September 2000)
• Volume XXVI, Numbers 1–2 (October–November 2000)
• Volume XXVI, Numbers 4–12 (January–September 2001)
• Volume XXVIII – (October 2001– onward)