Analog Science Fiction/Science Fact, Vol. 88, No. 1, September 1971

5 Ecological Notes [Editorial (Analog)] essay by John W. Campbell, Jr. [as by John W. Campbell]
8 Wheels Within Wheels [LaNague Federation] novelette by F. Paul Wilson
50 Strong Poison [Science Fact (Analog)] essay by Carl A. Larson
62 The Lion Game (Part 2 of 2) [Telzey Amberdon] serial by James H. Schmitz
103 The Fine Print novelette by John T. Phillifent
134 The Analytical June 1971 (Analog, September 1971) [The Analytical Laboratory] essay by uncredited
135 To Make a New Neanderthal short story by W. Macfarlane
139 In Times to Come (Analog, September 1971) [In Times to Come (Analog)] essay by The Editor
141 Knight Arrant short story by Jack Wodhams
159 On the Nature of Angels short story by uncredited
161 Department of Diverse Data (Analog, September 1971) [Department of Diverse Data (Analog)] essay by uncredited
162 The Reference Through the Curtain (Analog, September 1971) [The Reference Library] essay by P. Schuyler Miller
168 Brass Tacks (Analog, September 1971) [Brass Tacks] essay by uncredited