Keywords. Poincare duality space, fibration
AMS subject classification. Primary: 57P10. Secondary: 55R99.
Submitted: 15 November 2004.
Accepted: 5 January 2005.
Published: 7 January 2005.
Corrected: 22 June 2005 (see footnote on page 24).
John R. Klein
Department of Mathematics, Wayne State University
Detroit, MI 48202, USA
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