what a coincidence! i also loved to eat chalks when i was small.but yes it really harmful for health.my addiction for chalks was vanished due to the efforts of my parents as well as my will power.plz stop eating chalks. best wishes for recovery from that bad habit.
Definitive Media Library. A Definitive Media Library is a secure Information Technology repository in which an organisation's definitive, authorised versions of software media are stored and protected.
The Library of Congress is the world's largest library, whose mission is to make its resources available and useful to Congress and the American public. In carrying out its mission, the Library increasingly relies on IT systems, particularly in light of the ways that digital technology has changed the way information is created, shared, and preserved.