Analog Science Fiction / Science Fact April 1979 Very Good

Analog Science Fiction / Science Fact January 1979 Good+

Analog Science Fiction / Science Fact November 1979 Good+

Analog Science Fiction / Science Fact October 1979 Very Good+

Analog Science Fiction / Science Fact August 1979 Very Good+

Analog Science Fiction / Science Fact March 1979 Good

Analog Science Fiction / Science Fact December 1979 Good

Analog Science Fiction / Science Fact September 1979 Good-