1. From the Editors

   Letter to the Editor Pages: 153 - 153

2. Willem Blok's Work in Algebraic Logic

   • James G. Raftery

   OriginalPaper Pages: 155 - 160

3. Equational Characterization of the Subvarieties of BL Generated by t-norm Algebras

   • Fransesc Esteva
   • Lluís Godo
   • Franco Montagna

   OriginalPaper Pages: 161 - 200

4. Order Algebras as Models of Linear Logic

   • Constantine Tsinakis
   • Han Zhang

   OriginalPaper Pages: 201 - 225

5. Equational Bases for Joins of Residuated-lattice Varieties

   • Nikolaos Galatos

   OriginalPaper Pages: 227 - 240

6. Rule Separation and Embedding Theorems for Logics Without Weakening

   • Clint J. Van Alten
   • James G. Raftery

   OriginalPaper Pages: 241 - 274

7. The Variety of Lattice-Ordered Monoids Generated by the Natural Numbers

   • Annika M. Wille

   OriginalPaper Pages: 275 - 290

8. From Semirings to Residuated Kleene Lattices

   • Peter Jipsen

   OriginalPaper Pages: 291 - 303