How is K. Knowledge is still stored in books, particularly 'old' knowledge. Some of that is accessible through the internet. Much of the current data is available ONLY on the internet.
Much reference material is stored magneticly now, and distributed on disks.
Most business information is stored magneticly. A lot of the 'old' information in books is not readily available even through inter- library loan. There is a permanent lag in translation from other languages. Computers store huge amounts of data for business, research, and the internet. Government, too, stores huge amounts of data on computers.