General PC magazine Radio Science December 1976 issue

General PC magazine Radio Science October 1976 issue

General PC magazine Radio Science August 1976 issue

General PC magazine with supplement Radio Science September 1977 issue

General PC magazine with appendix Radio Science November 1973 issue

General PC magazine with appendix Radio Science February 1977 issue

General PC magazine with supplement Radio Science October 1977 issue

General PC magazine with CD TRY! PC January 1997 issue Try PC no appendix