bundle, stack
Il prenait des notes non pas sur son UniBook, mais sur une liasse de papier.
He was taking notes not on his UniBook, but on a stack of paper.
Il lui a donné une liasse d'argent.
He gave him a wad of cash.
Il lui a donné une liasse de billets.
He gave her a wad of bills.
Alors elle prit une autre liasse, et, dans cette liasse, au hasard, un papier.
Then she took another bundle and, at random, a sheet of paper from it.