Volume 135, Issue 2, March 1992

## Homotopy classification of self-maps of $BG$ via $G$-actions. Part II

Pages 227-270 by Jackowski, James McClure, Bob Oliver

## Hermitian modules in Galois extensions of number fields and Adams operations

Pages 271-296 by Boas Erez, Martin J. Taylor

## Extending morphisms of groups and graphs

Pages 297-323 by Michael Aschbacher, Yoav Segev

## Algebraic $\mathbf{K}$-theory of number fields and rings of integers and the Stickelberger ideal

Pages 325-360 by Grzegorz Banaszak

## Rigidity for Anosov actions of higher rank lattices

Pages 361-410 by Steven Hurder