Analog Science Fiction / Science Fact November 1990 Very Good

Analog Science Fiction / Science Fact September 1987 Very Good

Analog Science Fiction / Science Fact December 1990 Very Good-

Analog Science Fiction / Science Fact March 1990 Good+

Analog Science Fiction / Science Fact August 1983 Good+

Analog Science Fiction / Science Fact July 1989 Good

Analog Science Fiction / Science Fact June 1984 Good

Analog Science Fiction / Science Fact January 1984 Good+