John deere b manual

The medieval Muslim world also used a method of reproducing reliable copies of a book in large quantities known as check reading, in contrast to the traditional method of a single scribe producing only a single copy of a single manuscript. In the check reading method, only authors could authorize copies, and this was done in public sessions in which the copyist read the copy aloud in the presence of the author, who then certified it as accurate. 22 With this check-reading system, an author might produce a dozen or more copies from a single reading, and with two or more readings, more than one hundred copies of a single book could easily be produced.

23 By using as writing material the relatively cheap paper instead of parchment or papyrus the Muslims, in the words of Pedersen accomplished a feat of crucial significance not only to the history of the Islamic book, but also to the whole world of books. Wood block printing.