Volume 133, Issue 1, May 1991

## Mean values of derivatives of modular $L$-series

Pages 447-475 by M. Ram Murty, Vijaya Kumar Murty

## Approximation in the mean by polynomials

Pages 477-475 by James E. Thomson

## Siegel’s theorem in the compact case

Pages 509-548 by Paul Vojta

## Diophantine approximation on abelian varieties

Pages 549-576 by Gerd Faltings