The content  of  the web  pages is  copywrited. The copying and  distribution of  the  books  is  forbidden.

There's  been  an  attempt  -not  always  successfully-  to maintain the form of the printed books and covers.

You will need Acrobat Reader to read the books. The time needed  to  open  them, depends  on  their  size, which  is stated for each one of them.

The  construction, editing  and  maintenance  of  the  web pages is done by Stefanos Koufopoulos.