Published by Duke University Press since its inception in 1935, the Duke Mathematical Journal is one of the world's leading mathematical journals. Without specializing in a small number of subject areas, it emphasizes the most active and influential areas of current mathematics.

### Volume 67, Number 2

#### Publication Date: August 1992

The codimension-two homology of the moduli space of stable curves is algebraic

Dan Edidin; 241-272

Little topology, big volume

Robert E. Greene and Peter Petersen, V; 273-290

On the average period of an elliptic curve

Ben Lichtin; 291-332

On the local-energy decay property for the elastic wave equation with the Neumann boundary condition

Mishio Kawashita; 333-351

Complex tangents of real surfaces in complex surfaces

Franc Forstnerič; 353-376

A formula for two-row Macdonald functions

N. H. Jing and T. Józefiak; 377-385

Cycles in a product of elliptic curves, and a group analogous to the class group

Stephen J. M. Mildenhall; 387-406

Fibred surfaces and moduli

Fernando Serrano; 407-421

Isometric embeddings of surfaces with nonnegative curvature in $\mathbf{R}^3$

Joseph A. Iaia; 423-459