Publisher's platforms

Collections

Approx. 06/30/2010
Approx. 06/30/2011
Approx. 06/30/2012
Approx. 06/30/2013
Approx. 06/30/2013

E-books

Approx. 06/30/2007
Approx. 06/30/2009
Approx. 06/30/2009
Approx. 06/30/2009
Approx. 06/30/2012
Approx. 06/30/2013