Despite the growth in the size of knigopechati in the XV century, the book also published in the limited circulations and were very expensive. The need for careful attitude to them was evident. One of the earliest references to the use of bookmarks refers to 1584, when the Royal printer Christopher Barker gave Queen Elizabeth I, silk bookmark with a border. Narrow silk ribbons have become common tab in the XVIII and XIX centuries, they fixed on the cover and do more than the height of the page. The first detachable bookmarks began to appear in the 1850's, they performed, as a rule, of silk or embroidery. Only in 1880 paper has been widely disseminated. In the early 1800s have become popular steam printing machines. They can print up to 1,100 sheets per hour, however, the workers can set for the same time no more than 2000 characters. At the end of the XIX century were introduced monotipnye and linotipnye the press. They can be stacked up to 6000 characters and even the entire line immediately. For many years, since the XV century, were spent on the improvement of the printing machines and the adoption of the freedom of speech, gradually reducing the level of censorship. And by the middle of XX century the production of books in Europe surpassed the mark of 200 thousand items per year. Of all, for today, there are about 130 million book titles. The term «electronic book (e-book, English e-book) applies in relation to a book, containing information of a normal book, but presented in a digital format and posted on the electronic media (CD-ROM, DVD-ROM, etc.). The growing number of publications (the so-called information explosion) put in front of libraries question of keeping such a large array of information. The emergence of electronic publications and the Internet enables you to not print the information in the form of paper books, and store it on a much more intensive electronic media in electronic libraries, providing access to it, both locally and remotely through a network. Books in this form has its advantages and disadvantages, but, in connection with some inconvenience existing systems of reading of electronic books, often preference is given to traditional paper, in support of their production at a sufficient level. However, at present many people try to digitize books available, to provide convenience store them on electronic media and to ensure unimpeded access to them of all comers. There are also achievements and for the process of their publications, such as print-on-demand, electronic journals, etc. http://amazing-ebooks.com/mp3/