World of Science Encyclopedia.
  <i><b>World of Science Encyclopedia</b></i>.
  Creative World Publications, 1971.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/WOS-1971-WOS.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/WOS-1971-WOS.bib">(bibtex:
  WOS-1971-WOS)</A>.<br />