Copy:
v. 1-v. 6, no. 15
v. 6, no. 20, 23
v. 7, no. 1,4,9,12-13,17-18
v. 9, no. 1,10,14
v. 10, no. 1-18, 20, 23
v. 11, no. 3,7,11-13,16,18-21
v. 12, no. 2-11 (1968-Feb 7, 1974
Apr 20, Jun 1,29, Sep 7, Nov 16, Dec 18, 1974
Jan 11, Mar 1-22, 1975
Dec 11, 1986
Jan 29, Jul 16-Apr 1, 1978
Apr 29, Jun 10, Sep 2, Oct 28, Dec 23, 1978
Jan 6-20, Mar 1, Mar 31-May 12, Aug 18-Dec 22, 1979)
v. 12, no. 12-15, 17-20, 22-24
v. 13, no. 1,3-19, 22-24
v. 14, no. 2,4-13, 15-17, 20-23
v. 15, no 1-2,8,10-24
v. 16, no. 1
v. 22, no. 2
v. 23, no. 7 (Jan 5-Feb 16, Mar 15-Apr 26, May 24-Jul 19, Sep 6-Dec 17, 1980
Jan-Apr 18, May 30-Jun 27, Aug 15, Sep 19-Dec, 1981
Jan 2-14, Feb 13-Mar 13, Apr 24-Jun 5, Jul 17-Aug 21, Nov 13, Dec 11-25, 1982
Jan-Jun 18, Jul 16, Aug 19, 1989
Nov 10, 1990)
v. 25, no. 5-9, 11-21
v. 26, no. 1-9, 11-12, 14-21 ' v. 27, no, 1-4, 27 (Oct 10-Dec 19, 1992
Jan 11-Jun 26, Jul 17-Dec 19, 1993
Jan 22-Feb 12, Mar 12-Jun 25, Jul 23-Oct 8, 1994
Apr 15, 1995)
Includes extra issues without dates or numbers