Analog Science Fiction / Science Fact September 1977 Good+

Analog Science Fiction / Science Fact October 1977 Very Good

Analog Science Fiction/Science Fact Vol. 97 #7 VF 1977 Stock Image

Analog Science Fiction / Science Fact December 1977 Good

Analog Science Fiction / Science Fact November 1977 Good-

Analog Science Fiction/Science Fact Vol. 97 #7 VG 1977 Stock Image Low Grade

Analog Science Fiction / Science Fact July 1985 Good+

Analog Science Fiction/Science Fact Vol. 93 #5 FN 1974