Date: 13 Feb 2000 12:05:39 EST From: Martin.A.Arkowitz@Dartmouth.EDU (Martin A. Arkowitz) Subject: Re: 2 questions Here is a reply to the question of Jianzhong Pan: Zabrodsky's book, Hopf Spaces (North Holland Math Studies #22) has information on H-deviations and homotopy pull-backs (pp. 25 -33). Sincerely, Martin