Forward: A volume dedicated to Bjarni Jónsson on the occasion of his seventieth birthday Editorial Pages: 301 - 305
A perspective on algebraic representations of lattices William A. Lampe OriginalPaper Pages: 337 - 364
A geometric description of modular lattices Christian HerrmannDouglas PickeringMichael Roddy OriginalPaper Pages: 365 - 396
Congruence normality: The characterization of the doubling class of convex sets Alan Day OriginalPaper Pages: 397 - 406
On the representation of distributive semilattices Michael Tischendorf OriginalPaper Pages: 446 - 455