178 pages; spine creasing, edge wear; Analog August 1971 Vol. LXXXVII No. 6; Fiction: "The Lion Game [Part 1 of 2]" by James H. Schmitz; "Analog" by Grant D. Callin; "A Little Knowledge" by Poul Anderson"; "Dummyblind" by Douglas Fulthorpe; "Letter From An Unknown Genius" by Colin Kapp; "Ratman" by F. Paul Wilson; Articles by Nails Aall Barricelli; G. Harry Stine;