Copy: 1
Vol. 1, no. 1 (Dec. 1970)
v. 11, no. 2 (Qtr. 2, 1981)
v. 11, no. 3 (Qtr. 3, 1981)
v. 12, no. 4 (Qtr. 4, 1981)
v. 13, no. 1 (Qtr. 1, 1982)
v. 13, no. 2 (Qtr. 2, 1982)
v. 13, no. 4 (Qtr. 4, 1982)
v. 14, no. 2 (Qtr. 2, 1984)-v. 14, no. 4 (Qtr. 4, 1984)
v. 15, no. 3 (Qtr. 3, 1985)-v. 15, no. 4 (Qtr. 4, 1985)
v. 16 (1985)-v. 18 (1988)
v. 19, no. 2 (Qtr. 2, 1989)-v. 22, no. 2 (Qtr. 2, 1992)
v. 23, no. 1 (Qtr. 1, 1993)
v. 23, no. 4 (Qtr. 4, 1993)
v. 24, no. 1 (Qtr. 1, 1994)-v. 33, no. 1 (Qtr. 1, 2003)
v. 33, no. 3 (Qtr. 3, 2003)-v. 34, no. 3 (Qtr. 3, 2004)
v. 35, no. 1 (Qtr. 1, 2006)-v. 40, no. 3 (Qtr. 3, 2010)
v. 41, no.1(Qtr. 1, 2011)
v. 41, no.3 (Qtr. 3 2011)- v. 42, no.2 (Qtr. 2 2012)
v. 42, no. 4 (Qtr. 4 2012) - v. 44, no. 1 (Qtr. 1 2014)
v. 44, no.4 (Qtr. 4 2014) - v. 45, no. 1 (Qtr. 1 2015)
v. 45, no. 3 (Qtr. 3 2015) - v.46, no. 2 (Qtr.2 2016)
v. 47, no. 1 (Qtr. 1 2017) - v. 47, no. 4 (Qtr. 4 2017)
v. 48, no. 2 (Qtr. 2 2018) - v. 53, no. 2 (Qtr. 2 2023)