Analog Science Fiction/Science Fact June 1978 Gregory Benford Joan D. Vinge

Analog Science Fiction / Science Fact January 1978 Very Good-

Analog Science Fiction / Science Fact July 1978 Very Good

Analog Science Fiction / Science Fact May 1978 Very Good

Science Fiction Analog Science Fact Magazine - June 1978

Analog Science Fiction/Science Fact Vol. 98 #6 VF 1978 Stock Image

Analog Science Fiction / Science Fact December 1978 Very Good+

Analog Science Fiction / Science Fact September 1978 Very Good+