Blackwell's
The group were also publishers , under the Blackwell publishing imprint which published over 800 journals when it was sold to John Wiley & Sons in 2007 for £572 million to form Wiley-Blackwell . 
<triplet> Blackwell publishing <subj> John Wiley & Sons <obj> parent organization <triplet> John Wiley & Sons <subj> Blackwell publishing <obj> subsidiary <subj> Wiley-Blackwell <obj> subsidiary <triplet> Wiley-Blackwell <subj> John Wiley & Sons <obj> parent organization