• ESBN - Electronic Standard Book Number
  
  Numly provides ESN number assignments for electronic media including: websites, blogs, e-books, music, images, source code, and other digital assets.
  copyright drm e-book e-books ebook ebooks esn microformats numly plagiarism
  in Utilities & Resources > Books & Libraries with books electronic esbn libraries number resources standard utilities by 2 users

esbn from all users