Analog Science Fiction / Science Fact September 1990 Good+

Analog Science Fiction / Science Fact December 1990 Very Good-

Analog Science Fiction / Science Fact November 1988 Very Good

Analog Science Fiction / Science Fact October 1982 Very Good

Analog Science Fiction / Science Fact July 1977 Very Good

Analog Science Fiction / Science Fact September 1987 Very Good

Analog Science Fiction / Science Fact February 1990 Very Good-

Analog Science Fiction / Science Fact April 1990 Very Good-