This icon has been made by fusing 2 drawings from the OpenClipart livrary (http://www.openclipart.org)

The CD is a creation of Nicu Buculei and can be donwloaded at
http://openclipart.org/clipart/unsorted/cd.svg

The books with the question mark are from
http://openclipart.org/clipart/education/book/help-books-aj.svg_aj_ashton_01.svg
