Annual World's Best SF is a 7-book series with 7 released primary works first released in 1973 with contributions by George R.R. Martin, Lisa Tuttle, Brian M. Stableford, John Brunner, P.J. Plauger, Richard Cowper, Stephen Robinett, Joan D. Vinge, Vernor Vinge, Barrington J. Bayley, and Fritz Leiber.
#2 of 7 in Annual World's Best SF
1973 • 253 pages
#5 of 7 in Annual World's Best SF
1976 • 280 pages
#9 of 7 in Annual World's Best SF
1980 • 284 pages
#10 of 7 in Annual World's Best SF
1981 • 252 pages
#12 of 7 in Annual World's Best SF
1983 • 255 pages
#19 of 7 in Annual World's Best SF
1990 • 1 Reader • 341 pages • 3