Note: This calendar view maps the number of captures of http://www.unesco.org/new/en/tip-a-friend/?tipUrl=http%3A%2F%2Fwww.unesco.org%2Fnew%2Fen%2Funesco%2Fevents%2Fsocial-and-human-sciences-events%2F, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.