First HC edition, per ISFDB (Gollanz issued an incomplete version a month prior), with gutter code "J 28" on page 310 indicates a printing in July 1979, simultaneous with the trade paperback original. Tight, clean, flat, square, sharp and crisp book in DJ toned edges, light wear and a small tear at the hinge. 

"Jacket illustration by GARY VISKUPIC" printed near the bottom of the back inside flap of the dustjacket Contents:

Introduction - Terry Carr - in
The Barbie Murders - John Varley - nv IASFM Jan/Feb ’78
A Hiss of Dragon - Gregory Benford & Marc Laidlaw - nv Omni Dec ’78
Black Glass - Fritz Leiber - nv Andromeda 3, ed. Peter Weston, London: Futura, 1978
To Bring in the Steel - Donald Kingsbury - nv Analog Jul ’78
The Very Slow Time Machine - Ian Watson - nv Anticipations, ed. Christopher Priest, Scribner’s, 1978
Devil You Don’t Know - Dean Ing - nv Analog Jan ’78
Count the Clock That Tells the Time - Harlan Ellison - ss Omni Dec ’78
View from a Height - Joan D. Vinge - ss Analog Jun ’78
The Morphology of the Kirkham Wreck - Hilbert Schenck - nv F&SF Sep ’78
Vermeer’s Window - Gordon Eklund - ss Universe 8, ed. Terry Carr, Doubleday, 1978
The Man Who Had No Idea - Thomas M. Disch - nv F&SF Oct ’78
Death Therapy - James Patrick Kelly - nv F&SF Jul ’78
Recommended Reading—1978 - Terry Carr - list
The Science Fiction Year - Charles N. Brown - list