Keep an Eye on This-- eBooks vs Printed Books Transformation Prediction

With the struggle of bricks and mortar book stores and the reported eclipsing of the sale of ebooks by some sources, printers of all products shouldl be keeping abreast of the news. Some in the book industry predict the transmforamtion will happen faster than expected when compared to the music and movie industry.  http://prnt.in/ZJx   24 Months?  12 months?