Abstract
“Bibliology” is a study about book, covering among others also librarianship which has libraries as main subject of research together with their history. To some extent “bibliology” and librarianship caver common area – in other words they are complementary. History equips bibliological research with some tools. I intent to present the most important of them in hereby article, as well as describe their essence, the way of use and importance for the “bibliology”.