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This image is a derivative work of the following images:

• File:Gray_book.png licensed with PD-OpenClipart
  • 2010-08-10T12:08:31Z Hyju 250x231 (11750 Bytes) {{Information |Description={{en|1= A slightly sketchy, greyscale book.}} |Source=[http://www.openclipart.org/detail/78469 Open Clip Art Library image's page] |Date=2010-08-08 |Author=[http://www.openclipart.org/user-deta

• File:Question_mark_3d.png licensed with PD-self
  • 2006-12-10T22:10:25Z Husky 496x959 (208008 Bytes) {{Information |Description=A three-dimensional question mark. For anyone interested: the font for the question mark is Bitstream Vera Sans, the reflection map used is [[:Image:010609 28 villadesteacque.JPG]] |Source=Own work.