The Magazine of Fantasy and Science Fiction: January 1973 (Volume 44, Number 1)
Cover by David Hardy (from Challenge of the Stars.)

Short Novel: "The Stalking Trees" by Thomas Burnett Swann.

Novelets: "A Peripheral Affair" by George R. R. Martin
"When the Stars Threw Down Their Spears" by John Morressy

Stories: "Ralph 4F" by John Sladek (parody series - this time its Hugo Gernsback)
"Outside" by Barry N. Malzberg
"Jeannette's Hands" by Philip Latham (a.k.a. Robert S. Richardson)
"Kite: Yellow and Green" by Robert Lory
"The Devil We Know" by William Walling.

Science: "The Ancient and the Ultimate" by Isaac Asimov.