Copy: 1
v. 1, no. 3 (Jul 1972)
v. 1, no. 5 (Sep 1972)
v. 1, no. 8 (Dec 1972)
v. 2, no. 11 (Nov 1972)
v. 3, no. 3 (Mar 1974)
v. 4, no. 3 (Mar 1975)
v. 5, no. 4 (Apr 1976)
v. 5, no. 10 (Oct 1976)-v. 5, no. 12 (Dec 1976)
v. 6, no. 2 (Feb 1977)-v. 6, no. 3 (Mar 1977)
v. 6, no. 5 (May 1977)
v. 6, no. 9 (Sep 1977)
v. 7, no. 2 (Fev 1978)
v. 7, no. 5 (May 1978)
v. 7, no. 6 (Jun 1978)-v. 7, no. 7 (Jul 1978)
v. 7, no. 12 (Dec 1978)
v. 8, no. 5 (May 1979)
v. 8, no. 7 (Jul 1979)
v. 8. no. 10 (Oct 1979)
v. 9, no. 3 (Mar 1980)
v. 9, no. 5 (May 1980)
v. 9, no. 9 (Sep 1980)
v. 11, no. 1 (Jan 1982)
v. 12, no. 1 (Jan 1983)