Perrow Charles Normal accidents Living with high-risk technologies with a new afterword and a postscript on the Y2K problem Perrow Charles - Princeton Princeton University Press 1999 - x, 451p. cm. Bibliography: P 426-39 ISBN: 9780691004129 786.07 Source: 7002, 27/04/2000, SBD General Book Dewey Class. No.: Y:437, N9/TD