Its focus is on incunables , early printing , and the life and work of Johannes Gutenberg , inventor of the modern printed book .
The Gutenberg - Jahrbuch is an annual periodical publication covering the history of printing and the book .
Gutenberg - Jahrbuch 's focus is on incunables , early printing , and the life and work of Johannes Gutenberg , inventor of the modern printed book .
The Gutenberg - Jahrbuch is an annual periodical publication covering the history of printing and the book .