Volume 13 Number 1 — January 1972
Volume 13 Number 2 — February 1972
Volume 13 Number 3— March 1972
Volume 13 Number 4 — April 1972
Volume 13 Number 5 — May 1972
Volume 13 Number 6 — June 1972
Volume 13 Number 7 — July 1972
Volume 13 Number 8 — August 1972
Volume 13 Number 9 — August 1972
Volume 13 Number 10 — October 1972
Volume 13 Number 11 — November 1972
Volume 13 Number 12 — December 1972
Volume 13 Complete Set