General PC magazine Radio Science December 1976 issue

General PC magazine Radio Science October 1976 issue

General PC magazine with appendix Radio Science September 1976 issue

General PC magazine Radio Science March 1977 issue

Magazine of Fantasy and Science Fiction Vol. 51 #2 GD/VG 3.0 1976 Low Grade

General PC magazine Radio Science May 1977 issue

Lot of 7 1976 Analog Magazine of Science Fact & Fiction A. C. Clarke Silverberg

General PC magazine with appendix Radio Science February 1977 issue