New Writings in SF 20 is an anthology of science fiction short stories edited by John Carnell, the twentieth volume in a series of thirty, of which he edited the first twenty-one.
It was first published in hardcover by Dennis Dobson in 1972, followed by a paperback edition issued by Corgi under the slightly variant title New Writings in SF -- 20 the same year.
[1] The book collects six novelettes and short stories by various science fiction authors, with a foreword by Carnell.
This article about a collection of science fiction short stories published in the 1970s is a stub.
You can help Wikipedia by expanding it.