What point has reached the world catalog of incunabula ?

After the Second world war, the Berlin Deutsche Staatsbibliothek takes up again the publication of the Gesamtkatalog der Wiegendrucke (GW), the world catalog of incunabula, which brings up date the bibliography of the XVth century prints in order to replace the Hain. The method of description of the incunabula established during the 20' under Haebler is always now the best adapted. The participation of the biggest number of libraries would contribute to speed up this scientific cataloguing and would be of the interest of the libraries which keep incunabula, for the writing of the GW is at the disposal of the holders for all the problems posed by their identification.