4) Rocky Mountain Spotted Fever: This disease is caused by a bacterium known as Rickettsia rickettsia. This disease is not transmitted directly from your pet to you, but rather by ticks that your dog may carry.
Home Johann Gutenberg Johann Gutenberg. Johann Gutenberg invented the printing press in the 1450's, and the first book to ever be printed was a Latin language Bible, printed in Mainz, Germany. Gutenberg's Bibles were surprisingly beautiful, as each leaf Gutenberg printed was later colorfully hand-illuminated.
The earliest known printed book is Chinese, from the end of the T'ang dynasty. Discovered in a cave at Dunhuang in 1899, it is a precisely dated document which brings the circumstances of its creation vividly to life. It is a scroll, 16 feet long and a foot high, formed of sheets of paper glued together at their edges.