:"Bill C-30" is ambiguous.  There will be a different such bill by that title for each parliament.  i.e.: Bill C-30 in 1997 was a clean air act.  In 1980, it appeared to be budgetary. In 1984 it represented an amendment to the bank act.  If any of these other bills are or were notable, than Bill C-30 would by necessity have to become a disambiguation page.  As such, I think the current title is best.