Analog Science Fiction/Science Fact Vol. 100 #7 VF+ 8.5 1980

Analog Science Fiction / Science Fact October 1980 Good+

Analog Science Fiction / Science Fact August 1980 Good

Analog Science Fiction / Science Fact March 1980 Good

Analog Science Fact-Science Fiction (1962 - 1980)

Analog Science Fiction/Science Fact Vol. 100 #1 VG+ 4.5 1980 Low Grade

Analog Science Fiction and Fact July 1980 Anasazi Dean Ing

Analog Science Fiction / Science Fact February 1980 Very Good+