Includes bibliographies.

Collapses of \times I and group presentations ; On the AndrewsCurtis conjecture and related problems ; Integral representations of rm Aut\,F^n and presentation classes of groups ; A note on commutators and squares in free products ; Rigidity of almost crystallographic groups ; Finite graphs and free groups ; A topological proof of a theorem of Brunner and Burns about M. Hall groups ; The Murasugi sum is a natural geometric operation. II ; The Arf invariant of classical knots ; The unknotting number of a classical knot ; A general position theorem for surfaces in Euclidean pace ; On the equivariant Dehn lemma ; Virtually Haken manifolds ; Lectures on old simple coverings and anifolds ; Witt classes of torsion linking forms ; Outermost forks and a theorem of Jaco ; Surfaces in anifolds ; Taming Hopf invariants ; Artin's braid groups and classical homotopy theory ; More compacta of infinite cohomological dimension ; Endomorphisms in the homotopy category ; On fake ^3\tilde \times S^1 # ^2\times S^2 ; Manifold having nonample normal bundles in quadrics ; Lefschetz fibrations of Riemann surfaces and decompositions of complex elliptic surfaces ; Algebraic surfaces and the arithmetic of braids. II ; A note on moves and on irregular coverings of ^4 M Cohen W Metzler and K Sauermann ; Wolfgang Metzler ; Martin Lustig and Wolfgang Metzler ; Richard Z Goldstein and Edward C Turner ; Kyung Bai Lee and Frank Raymond ; John R Stallings ; C L Tretkoff and M D Tretkoff ; David Gabai ; Louis H Kauffman ; W B Raymond Lickorish ; Bruce Trace ; Allan L Edmonds ; John Hempel ; Jose Maria Montesinos ; Hae Soo Oh ; Martin Scharlemann ; John R Stallings ; M G Barratt ; F R Cohen ; Leonard R Rubin ; A Zabrodsky ; Selman Akbulut ; Norman Goldstein ; Richard Mandelbaum ; B Moishezon ; Jose Maria Montesinos