World's Best Science Fiction 1971 by Donald A. Wollheim, Terry Carr, Bob Shaw, Isaac Asimov, R.A. Lafferty, Michael G. Coney, Clifford D. Simak, Arthur Sellings, Neal Barrett Jr., Gregory Benford, Gerald Jonas, Gordon Eklund, Ron Goulart, H.B. Hickey, Theodore Sturgeon, Larry Niven, Robert Silverberg, Davis Meltzer, Jack Gaughan