2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66660This is a correction to the afore-mentioned paper in Duke Math. J. vol. 75 (1994), 99-119 by S. Keel, K. Matsuki, and J. McKernan. We completely rewrite Chapter 6 according to the original manuscript of the second author, in order to fix some crucial mistakes pointed out by Dr. Qihong Xie.14 pagesAlgebraic Geometry14E30, 14J30text